Showing structure for (3s,6r,7s,10s,13s,16s,21as)-16-[(2s)-butan-2-yl]-8-hydroxy-3,10,13-triisopropyl-2,7,12-trimethyl-6-pentyl-3h,6h,7h,10h,13h,16h,19h,20h,21h,21ah-pyrrolo[2,1-f]1,10-dioxa-4,7,13,16-tetraazacyclononadecane-1,4,11,14,17-pentone