157078-49-4

8,16-Epoxyoxacycloundecino[2,3-h]azacyclohexadecine-6,18-dione,2-ethyl-2,3,7,8,9,9a,10,15,16,17,23,23a-dodecahydro-15-methoxy-3,7,9,11,19,21,23-heptamethyl-,(2R*,3R*,4E,7R*,8R*,9R*,9aR*,11Z,13E,15S*,16S*,19E,21E,23R*,23aS*)-