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partial structure which is represented by -COO- in the structure shown by General Formula (KA-1). 

In General Formula (KA-1), Zka represents an alkyl group, a cycloalkyl group, an ether group, a hydroxyl group, an amide group, an aryl group, a lactone ring group, or an electron-withdrawing group. When a plurality of Zkas are present, the plurality of Zkas may be the same or may be different and the Zkas may form a ring by linking with each other. Examples of rings which Zkas form by linking with each other include a cycloalkyl ring and a hetero ring (a cyclic ether ring, a lactone ring, and the like). 

nka represents an integer of 0 to 10. nka is preferably an integer of Oto 8, more preferably an integer of Oto 5, even more preferably an integer of 1 to 4, and the most preferably an integer of 1 to 3. 

Q represents an atomic group which is necessary for forming a lactone ring with atoms in the formula. The lactone ring is not particularly limited as long as the lactone ring is a group which has a lactone structure as described above; however, the lactone ring is preferably a group which has a ring lactone structure with 5 to 7 members, and a group in which another ring structure is condensed in a form in which a bicyclo structure and a spiro structure are formed in a ring lactone structure with 5 to 7 members is preferable. In General Formula (KB-1), Xkbl and Xk$_{62 }$ each indepen› dently represent an electron-withdrawing group. 

nkb and nkb’ each independently represent 0 or 1. Here, a case where nkb and nkb’ are 0 indicates that Xkbl and Xk$_{62 }$ are directly bonded with an ester group (--COO-). 

Rkbu Rk$_{62}$, Rk$_{63}$, and Rk$_{64 }$each independently represent a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, or an electron-withdrawing group. At least two of Rkbu Rk$_{62}$, and Xkbl may form a ring by linking with each other and at least two of Rk$_{63}$ , Rk 64 , and Xk$_{62 }$ may form a ring by linking with each other. 

Examples of a ring which at least two of Rk$_{63}$ , Rk 64 , and Xk$_{62 }$ may form by linking with each other preferably include a cycloalkyl group or a hetero ring group and the hetero ring group is preferably a lactone ring group. Examples of the lactone ring include a structure which is represented by, for example, Formulas (LCl-1) to (LCl-17) described above for the resin (A). 

Here, a structure which is represented by General Formula (KA-1) or (KB-1) is a monovalent or higher partial structure where at least one arbitrary hydrogen atom is removed in the structure in a case of not having a direct bond as in a case of the structure which is represented by General Formula (KA-1) and the structure which is represented by (KB-1) in a case where Xkbl and Xk$_{62 }$ are monovalent. 

Examples ofan electron-withdrawing group in Zka, Xk$_{61}$ , 65 Xk$_{62}$, and Rkbl to Rkb4 include a halogen atom, a cyano group, an oxy group, a carbonyl group, a carbonyloxy group, 

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(KA-1) 5 

(KB-1) 

an oxycarbonyl group, a nitrile group, a nitro group, a sulfonyl group, a sulfinyl group, or halo( cyclo )alkyl group or haloaryl group which is represented by -C(Rfl)(R 12 )- Rf3, and a combination thereof. 

Here, the "halo( cyclo )alkyl group" represents an alkyl group and a cycloalkyl group of which at least a part is halogenated. In a case where an electron-withdrawing group is a divalent or higher group, the remaining direct bonds form a bond with an arbitrary atom or substituent group and may be linked with a main chain of the resin (C) via an additional substituent group. 

Here, Rfl represents a halogen atom, a perhaloalkyl group, a perhalocycloalkyl group, or a perhaloaryl group, more preferably represents a fluorine atom, a perfluoroalkyl group, or a perfluorocycloalkyl group, and even more pref› erably represents a fluorine atom or a trifluoromethyl group. 

R$_{12 }$ and Rf3 each independently represent a hydrogen atom, a halogen atom, or an organic group and R$_{12 }$ and Rf3 may form a ring by linking with each other. The organic group represents, for example, an alkyl group, a cycloalkyl group, an alkoxy group, and the like. 

At least two ofR$_{12 }$to Rf3 may form a ring by linking with each other and examples of the formed ring include a (halo )cycloalkyl ring, a (halo )aryl ring, and the like. 

Examples of a (halo )alkyl group in Rfl to Rf3 include the alkyl group in the Zka and a structure where this group is halogenated. 

Examples of a (per)halocycloalkyl group and a (per) haloaryl group in Rfl to Rf3 or in a ring which R$_{12 }$ and Rf3 form by linking with each other include a structure where the cycloalkyl group in the Zka is halogenated, and more pref› erably a fluorocycloalkyl group which is represented by ----Ccnif c$_{2}$n-$_{2}$)H and a perfluoroaryl group which is repre› sented by ----Ccnif cn-I)• Here, the number of carbon atoms n is not particularly limited but is preferably 5 to 13 and more preferably 6. 

R$_{12 }$ more preferably represents the same group as Rfl or forms a ring by linking with Rf3. 

An electron-withdrawing group is preferably a halogen atom or a halo( cyclo )alkyl group or haloaryl group which is represented by -C(Rfl)(R$_{12}$)-Rf3 and more preferably ----C(CF$_{3}$) $_{2}$H or -C(CF$_{3}$) $_{2}$CHy 

Here, with regard to the electron-withdrawing group described above, the fluorine atoms of a part may be substituted with another electron-withdrawing group. 

Zka is preferably an alkyl group, a cycloalkyl group, an ether group, a hydroxyl group, or an electron-withdrawing group and more preferably an alkyl group, a cycloalkyl group, or an electron-withdrawing group. Here, the ether group is preferably an ether group which is substituted with an alkyl group, a cycloalkyl group, or the like, that is, an alkylether group and the like. The electron-withdrawing group is the same as described above. 

Examples of the halogen atom as Zka include a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, and the like, and a fluorine atom is preferable. 

The alkyl group as Zka may have a substituent group and may be either straight-chain or branched. A straight-chain alkyl group preferably has 1 to 30 carbon atoms and more preferably 1 to 20. A branched alkyl group preferably has 3 to 30 carbon atoms and more preferably 3 to 20. An alkyl group with 1 to 4 carbon atoms such as a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, an i-butyl group, and t-butyl group is preferable. 

The cycloalkyl group as Zka may be a monocyclic type or may be a polycyclic type. In the latter case, the cycloalkyl group may be a bridged type. That is, in this case, the 

