Tulathromycin Impurity 1

Chemical Name: (1S,3R,5S,6S,7R,9S,11S,13S,15R,16R,18R,21S,22S,25R,26S)-22-((2R,3R)-2,3-dihydroxypentan-2-yl)-11-(dimethylamino)-6,12,16-trihydroxy-7-methoxy-5,16,18,21,25,26-hexamethyl-6-((propylamino)methyl)-2,4,14,23,28-pentaoxa-20-azatetracyclo[13.10.1.13,7.19,13]octacosan-24-one