label: 7-ethyl-7-hydroxy-10H-1,3-Dioxolo(4,5-g)pyrano(3',4':6,7)indolizino(1,2-b)quinoline-8,11(7H,12H)-dione
label_lc: 7-ethyl-7-hydroxy-10h-1,3-dioxolo(4,5-g)pyrano(3',4':6,7)indolizino(1,2-b)quinoline-8,11(7h,12h)-dione