(6R,7S,9R,11R,12R,13S)-14-ethyl-7,12,13-trihydroxy-4-((2R,4R,5S)-5-hydroxy-4-methoxy-4,6-dimethyltetrahydro-2H-pyran-2-yloxy)-6-((3R)-3-hydroxy-6-methyl-4-(methylamino)tetrahydro-2H-pyran-2-yloxy)-3,5,7,9,11,13-hexamethyloxacyclotetradecane-2,10-dione