4-((2,6-dideoxy-3-C-methyl-3-O-methyl-alpha-L-ribo-hexopyranosyl)oxy)-14-ethyl-7,12-dihydroxy-3-hydroxymethyl-5,7,9,11,13-pentametehyl-6-((3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranosyl)oxy)oxacyclotetradecane-2,10-dione