2-Azabicyclo[16.3.1]docosa-1(21),4,6,10,18-pentaene- 3,20,22-trione, 9-[[(amino)carbonyl]oxy]-8,14-dimethoxy- 4,10,12,16-tetramethyl-13-[3-(dimethylamino)- 1-oxopropoxy)-19-[(2-propenyl)amino]-,stereoisomer, hydrochloride NSC683664 Propanoic acid, 3-(dimethylamino)-, 9-[[(amino)carbonyl]oxy]- 8,14-dimethoxy-4,10,12,16-tetramethyl-3,20,22-trioxo- 19-[(2-propenyl)amino]-2-azabicyclo[16.3.1]docosa- 1(21),4,6,10,18-pentaen-13-yl ester, stereoisomer, hydrochloride