Showing structure for n-[15-benzyl-1,4,7,13-tetrahydroxy-16-oxo-3,6-bis(sec-butyl)-3h,6h,9h,10h,11h,12h,15h,18h,19h,20h,20ah-pyrrolo[1,2-d]1,4,7,10,13-pentaazacyclooctadecan-12-yl]-2-[(1-hydroxyethylidene)amino]-3-methylbutanimidic acid