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