1-Benzyl-5,5-diphenyl-3-imidazolidine-2,4-dione-acetic acid 1-Imidazolidineacetic acid, 2,5-dioxo-4,4-diphenyl-3-(phenylmethyl)- 130889-50-8 2,5-Dioxo-4,4-diphenyl-3-(phenylmethyl)-1-imidazolidineacetic acid