Synonyms: (S)-4-Ethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-1H-pyrano(3',4':6,7)indolizino(1,2-b)quinoline-11-carboxaldehyde;1H-Pyrano(3',4':6,7)indolizino(1,2-b)quinoline-11-carboxaldehyde, 4-ethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-, (S)-;1H-pyrano[3',4':6,7]indolizino[1,2-b]quinoline-11-carboxaldehyde, 4-ethyl-3,4,12,14-tetrahydro-4-hydroxy-3,14-dioxo-, (4S)-