Synonyms: 20-Dihydro-20-O-phenyl desmycosin;91661-60-8;AC1O52IR;4A-O-de(2,6-dideoxy-3-C-methyl-.alpha.-L-ribo-hexopyranosyl)-20-deoxo-20-phenoxy-tylosin;4A-O-de(2,6-dideoxy-3-C-methyl-alpha-L-ribo-hexopyranosyl)-20-deoxo-20-phenoxy-tylosin;(4R,5S,6S,7R,9R,11E,13E,15R,16R)-6-[(2R,3R,4S,5R,6R)-4-(dimethylamino)-3,5-dihydroxy-6-methyloxan-2-yl]oxy-16-ethyl-4-hydroxy-15-[[(3R,4R,5R,6R)-5-hydroxy-3,4-dimethoxy-6-methyloxan-2-yl]oxymethyl]-5,9,13-trimethyl-7-(2-phenoxyethyl)-1-oxacyclohexadeca-11,13-diene-2,10-dione