Showing structure for 3,9-dibenzyl-1,10-dihydroxy-6-isopropyl-5,8-dimethyl-16-(2-methylpropyl)-3h,6h,9h,12h,13h,16h,19h,20h,21h,21ah-pyrrolo[1,2-d]1-oxa-4,7,10,13,16-pentaazacyclononadecane-4,7,14,17-tetrone