Synonyms: Octadecanoic acid, compd. with erythromycin (1:1);Abboticine;Erythromycin,octadecanoate (salt);Bristamycin (TN);Erypar;Bristamycin;Qidmycin;[(2S,3R,4S,6R)-2-[[(3R,4S,5S,6R,7R,9R,11R,12R,13R,14R)-14-ethyl-7,12,13-trihydroxy-4-[(2S,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyl-oxan-2-yl]oxy-3,5,7,9,11,13-hexamethyl-2,10-dioxo-1-oxacyclotetradec-6-yl]oxy]-3-hydroxy-6-methyl-oxan-4-yl]-dimethyl-azanium; octadecanoate;