Showing structure for (3s,6r,9s,15as)-9-[(2s)-butan-2-yl]-1,4,7-trihydroxy-6-[(4-methoxyphenyl)methyl]-3-{6-[(2s)-oxiran-2-yl]-6-oxohexyl}-3h,6h,9h,12h,13h,14h,15h,15ah-pyrido[1,2-a]1,4,7,10-tetraazacyclododecan-10-one