Erythromycin Estolate

[ (2S,3R,4S,6R) -4- (dimethylamino) -2-[[ (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R) -14-ethyl-7,12,13-trihydroxy-4-[ (2R,4R,5S,6S) -5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-3,5,7,9,11,13-hexamethyl-2,10-dioxo-oxacyclotetradec-6-yl]oxy]-6-methyloxan-3-yl] propanoate; dodecyl hydrogen sulfate

CCCCCCCCCCCCOS (=O) (=O) O.CC[C@@H]1[C@@] ([C@@H] ([C@H] (C (=O) [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) OC (=O) CC) (C) O) C) C) O) (C) O