Showing structure for 2-[(1-hydroxy-3-methylbutylidene)amino]-3-methyl-n-[1,4,7,14-tetrahydroxy-3,6,9-triisopropyl-12-methyl-16-(2-methylpropyl)-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]butanimidic acid