abstract |
A 5-norbornene-2-spiro-α-cycloalkanone-α′-spiro-2″-5″-norbornene represented by the following general formula (1): n n n n n n n n n n [in the formula (1), R 1 s, R 2 , and R 3 each independently represent a hydrogen atom or the like, and n represents an integer of 0 to 12]. |