Showing structure for n-{16-benzyl-1,4,7,14-tetrahydroxy-3,6,9-triisopropyl-12-methyl-10,17-dioxo-3h,6h,9h,12h,13h,16h,19h,20h,21h,21ah-pyrrolo[2,1-l]1-oxa-4,7,10,13,16-pentaazacyclononadecan-13-yl}-2-[(1-hydroxypropylidene)amino]-3-methylbutanimidic acid