1H-Pyrano[3',4':6,7]indolizino[1,2-b]quinoline-3,14(4H,12H)-dione,4-ethyl-4-hydroxy-, (R)-; (R)-(-)-Camptothecin; (R)-(-)-Camptothecine;(R)-Camptothecin; 20R-Camptothecin
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