6-N-formylamino-12,13-dihydro-1,11-dihydroxy-13-(beta-D-glucopyranosyl)-5H-indolo(2,3-a)pyrrolo(3,4-c)carbazole-5,7(6H)-dione
6-n-formylamino-12,13-dihydro-1,11-dihydroxy-13-(beta-d-glucopyranosyl)-5h-indolo(2,3-a)pyrrolo(3,4-c)carbazole-5,7(6h)-dione