. "In general formulas (1) and (2), R1 is a hydrogen atom, a halogen atom, an alkyl group which may have a substituent, an aralkyl group which may have a substituent, an aryl group which may have a substituent, cyano group, nitro group, an alkoxy group, ???COOR7, a carbonyl halide group, or ???CONR8R9, wherein R7 is a hydrogen atom, an alkyl group which may have a substituent, an aralkyl group which" . . . . .