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In the above formulas, R is the same as defined above, j represents an integer of 1 to 3, k represents an integer of 1 to 3, t’ represents an integer of 1 to 3, I represents an integer of 1 to 5, s represents an integer of 1 to 3 and each of q, r", v" and w" independently represents an integer of 1 to 3. 

In formula (a3-l), j is preferably 1 or 2, and more prefer- ably 1. Whenj is 1, it is preferable that the hydroxyl group is bonded to the 3rd position of the adamantyl group. 

When j is 2, it is preferable that the hydroxyl groups are bonded to the 3rd and 5th positions of the adamantyl group. 

In formula (a3-2), k is preferably 1. The cyano group is preferably bonded to the 5th or 6th position of the norbornyl group. 

In formula (a3-3), t’ is preferably 1. I is preferably 1. sis preferably 1. Further, it is preferable that a 2-norbornyl group or 3-norborny I group is bonded to the terminal of the carboxy I group of the acrylic acid. The fluorinated alkyl alcohol is preferably bonded to the 5th or 6th position of the norbornyl group. 

In formula (a3-4), q is preferably 1 or 2, and more prefer› ably 1. When q is 2, it is preferable that the cyano groups are bonded to the 3rd and 5th positions of the adamantyl group. When q is 1, it is preferable that the cyano group is bonded to the 3rd position of the adamantyl group. 

In formula (a3-8), r" is preferably 1 or 2, and more prefer› ably 1. 

In formula (a3-9), v" is preferably 1 or 2, and more pref- erably 1. 

In formula (a3-10), w" is preferably 1 or 2, and more preferably 1. 

The structural unit (a3) of the component (Al) may be either a single type of structural unit or a combination of two or more types of structural units. 

When the component (Al) includes the structural unit (a3), the amount of the structural unit (a3) within the component (Al), based on the combined total of all the structural units that constitute the component (Al), is preferably within a range from 1 to 80 mo! %, more preferably from 5 to 60 mo! %, and still more preferably from 15 to 40 mo!%. When the 

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