label: 1,2-diacetoxy-6-methoxy-3,3,14-trimethyl-1,2,3,14-tetrahydro-7H-benzo(b)chromeno(6,5-g)(1,8)naphthyridin-7-one
label_lc: 1,2-diacetoxy-6-methoxy-3,3,14-trimethyl-1,2,3,14-tetrahydro-7h-benzo(b)chromeno(6,5-g)(1,8)naphthyridin-7-one