(1,2,3a,4,8,14,15,17-Octahydro-16-hydroxy-11,12-dimethoxy-1,3a-dimethyl-2,8,14,15,17-pentaoxo(1)benzopyran(2',3':6,7)naphth(2,1-g)oxazolo(3,2-b)isoquinolin-1-yl)methyl 2-methylpropanoate 128999-30-4 Citreamicin beta LL E19085beta Propanoic acid, 2-methyl-, (1,2,3a,4,8,14,15,17-octahydro-16-hydroxy-11,12-dimethoxy-1,3a-dimethyl-2,8,14,15,17-pentaoxo(1)benzopyran(2',3':6,7)naphth(2,1-g)oxazolo(3,2-b)isoquinolin-1-yl)methyl ester