3'-N-Desmethyl-3'-N-formyl azithromycin

(2R,3S,4R,5R,8R,10R,11R,12S,13S,14R) -13-[ (2,6-Dideoxy-3-C-methyl-3-O-methyl-a-ribo-hexopyranosyl) oxy]-2-ethyl-3,4,10-trihydroxy-3,5, 6,8,10,12,14-heptamethyl-11-[[3,4,6-trideoxy-3- (formylmethylamino) -b-D-xylo-hexopyranosyl]oxy]-1-oxa-6-azacyclopentade

CC[C@@H]1[C@@] ([C@@H] ([C@H] (N (C[C@@H] (C[C@@] ([C@@H] ([C@H] ([C@@H] ([C@H] (C (=O) O1) C) O[C@H]2C[C@@] ([C@H] ([C@@H] (O2) C) O) (C) OC) C) O[C@H]3[C@@H] ([C@H] (C[C@H] (O3) C) N (C) C=O) O) (C) O) C) C) C) O) (C) O