14727-56-1 6,9-etheno-14,21-methano-12H,14H,21H-pyrido(2,1-l)(1,9,13)benzodioxaazacyclohexadecin-12-one, 10,11,15,15a,16,17,18,19-octahydro-2,3-dimethoxy-, (14S-(14R*,15aR*,21R*))-