label: 1,2-di-O-carbonyl-1,2-dihydroxy-6-methoxy-3,3,14-trimethyl-1,2,3,14-tetrahydro-7H-benzo(b)pyrano(3,2-h)acridin-7-one
label_lc: 1,2-di-o-carbonyl-1,2-dihydroxy-6-methoxy-3,3,14-trimethyl-1,2,3,14-tetrahydro-7h-benzo(b)pyrano(3,2-h)acridin-7-one