1H-Pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione, 10-amino-4-ethyl-4-hydroxy-, (S)- 9-AC 9-AMINO-20(S)-CAMPTOTHECIN 9-AMINO-20-(S)-CAMPTOTHECIN 91421-43-1 NSC603071