2-butyl-5-(4-hydroxyphenyl)-5,6,11,11a-tetrahydro-1H-imidazo(1',5'-1,6)pyrido(3,4-b)indole-1,3(2H)-dione
2-butyl-5-(4-hydroxyphenyl)-5,6,11,11a-tetrahydro-1h-imidazo(1',5'-1,6)pyrido(3,4-b)indole-1,3(2h)-dione