Provided is a compound represented by general formula (I), or a salt thereof. (In the formula, X1, X2, X3 and X4 are a hydrogen atom, a C1-9 alkyl group, or a C3-9 unsaturated hydrocarbon group which has 1-4 triple bonds between carbon atoms and which may have a substituent (when the unsaturated hydrocarbon group has a methylene group at the end of the bond, the methylene group may be substituted with a carbonyl group); X5 is a C2-8 unsaturated hydrocarbon group which has 1-4 triple bonds between carbon atoms and which may have a substituent; X6 is a hydrogen atom, or a C3-9 unsaturated hydrocarbon group which has 1-4 triple bonds between carbon atoms and which may have a substituent; n1 and n3 are 0 or 1; and n2 is an integer of 1-5.)
COMPOUND, SALT OF COMPOUND, NEUROMODULATION AGENT, METHOD FOR EVALUATING NEUROMODULATION AGENT, METHOD FOR PRODUCING COMPOUND, AND METHOD FOR PRODUCING SALT OF COMPOUND