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-[2-(dimethylamino)-1-oxoethoxy]-19-[(2-propenyl)amino]-, stereoisomer, hydrochloride Acetic acid, 2-(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 NSC683662