6-isobutyl-9-methoxy-3-methyl-2,3,6,7,12,12a-hexahydropyrazino(1',2'-1,6)pyrido(3,4-b)indole-1,4-dione
6-isobutyl-9-methoxy-3-methyl-2,3,6,7,12,12a-hexahydropyrazino(1',2'-1,6)pyrido(3,4-b)indole-1,4-dione