Showing structure for 3-ethyl-1,4,7,11-tetrahydroxy-6,13-bis(hydroxymethyl)-9-phenyl-3h,6h,9h,10h,13h,16h,17h,18h,18ah-pyrrolo[1,2-d]1,4,7,10,13-pentaazacyclohexadecan-14-one