label: 1h-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4h,12h)-dione, 4-ethyl-4-hydroxy-12-(2-hydroxyethoxy)-, (4s)-
label_lc: 1h-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-3,14(4h,12h)-dione, 4-ethyl-4-hydroxy-12-(2-hydroxyethoxy)-, (4s)-