I4I i4i 3-hydroxy-N-[(2R,5R,6S,9S,10S,11R)-10-hydroxy-5,11-dimethyl-3,7,12-trioxo-2-(propan-2-yl)-9-(pyridin-3-ylmethyl)-1,4-dioxa-8-azacyclododecan-6-yl]pyridine-2-carboxamide I4I