8a,16a-diphenyl-5,6,8,8a,13,14,16,16a-octahydropyrazino(2,1-a-5,4-a')diisoquinoline-2,3,10,11-tetraol
8a,16a-diphenyl-5,6,8,8a,13,14,16,16a-octahydropyrazino(2,1-a-5,4-a')diisoquinoline-2,3,10,11-tetraol