Synonyms: 11-Chloro-4-ethyl-3-hydroxy-1,3,4,12-tetrahydro-14H-pyrano(3',4':6,7)indolizino(1,2-b)quinolin-14-one;11-Chloro-4-ethyl-3-hydroxy-1,3,4,12-tetrahydro-14H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-14-one;1H-Pyrano[3',4':6,7]indolizino[1,2-b]quinolin-14(12H)-one, 11-chloro-4-ethyl-3,4-dihydro-3-hydroxy-