The present invention provides a compound represented by general formula (1). (In the formula, R 1 represents an alkyl group having 2 to 9 carbon atoms, an alkenyl group having 2 to 9 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms which may have a substituent, or a phenyl group which may have a substituent; R 2 represents an alkyl group having 1 to 3 carbon atoms; R 3 to R 5 independently represent a hydrogen atom, or an alkyl group having 1 to 3 carbon atoms; R 6 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms which may have a substituent, or an alkoxy group having 1 to 5 carbon atoms; n represents 0 or 1; and the wavy line represents a cis form, a trans form or a mixture of a cis form and a trans form.)