LL-E-19085α

citreamicin alpha

3-Methylbutanoic acid [(1,2,8,14,15,17-hexahydro-16-hydroxy-11,12-dimethoxy-1,1-dimethyl-2,8,14,15,17-pentaoxo[1]benzopyrano[2',3':6,7]naphth[2,1-g]oxazolo[3,2-b]isoquinolin)-3a(4H)-yl]methyl ester