(Z)-Ethyl 2-(2-(4-acetoxyphenyl)hydrazono)-2-chloroacetate;Ethyl 2-chloro-2-[(4-methoxyphenyl)hydrazinylidene]acetate;Ethyl (2Z)-chloro[(4-methoxyphenyl)hydrazono]acetate;Acetic acid, 2-chloro-2-[2-(4-methoxyphenyl)hydrazinylidene]-, ethyl ester