2,4-Imidazolidinedione, 5-(2,4-dihydroxyphenyl)-5-(4-hydroxyphenyl)- 5-(2,4-Dihydroxyphenyl)-5-(4-hydroxyphenyl)-2,4-imidazolidinedione 5-(2,4-Dihydroxyphenyl)-5-(4-hydroxyphenyl)hydantoin 74697-61-3