20H-6,20-Methano-11,15-metheno-1H,8H-benzo[g]pyrido[2,1-d][1,5]oxaazacyclohexadecin-8-one,2,3,4,4a,5,6,9,10-octahydro-14-hydroxy-16,17-dimethoxy-, (4aR,6S,20S)- (9CI)