ERYTHROMYCIN 2-(ETHYL CARBONATE);Erythromycin, 2‘-(ethyl carbonate);Carbonic acid 4-dimethylamino-2-[14-ethyl-7,12,13-trihydroxy-4-(5-hydroxy-4-methoxy-4,6-dimethyl-tetrahydro-pyran-2-yloxy)-3,5,7,9,11,13-hexamethyl-2,10-dioxo-oxacyclotetradec-6-yloxy]-6-methyl-tetrahydro-pyran-3-yl ester ethyl ester;
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