3'-deamino-3'-(3-cyano-4-morpholinyl)doxorubicin [ 3'-(3-cyano-4-morpholinyl)-3'-deaminoadriamycin,3'-deamino-3'-(3-cyano-4-morpholinyl)doxorubicin, (S-(8S-cis))-isomer,A 489,A-489,MRA-CN,cyanomorpholino doxorubicin,cyanomorpholinoadriamycin ] more effective and has lower toxicity than doxorubicin