1 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 1.000 2 PYW Pyridomycin 0.974