Benzoic acid, 4-amino-, [(4-ethyl-3,4,12,14-tetrahydro- 4-hydroxy-3,14-dioxo-1H-pyrano[3',4':6,7]indolizino [1,2-b]quinolin-11-yl)methylene]hydrazide,monohydrochloride NSC681641 iH-Pyrano[3',4':6,7]indolizino[1,2-b]quinoline,4-aminobenzoic acid deriv.