2,4-Imidazolidinedione, 5-(3,4-dimethoxyphenyl)-5-(4-methoxyphenyl)- 5-(3,4-Dimethoxyphenyl)-5-(4-methoxyphenyl)-2,4-imidazolidinedione 5-(3,4-Dimethoxyphenyl)-5-(4-methoxyphenyl)hydantoin 74697-42-0