CAS No 84012-21-5 , (2R,3R,4S,5R,8R,9S,10S,11R,12R)-5-ethyl-3,4-dihydroxy-9-[(2R,4R,5S,
6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-11-[(2S,3R,4S,
6R)-3-hydroxy-6-methyl-4-(methylamino)oxan-2-yl]oxy-2,4,8,10,12,
14-hexamethyl-6,15-dioxabicyclo[10.2.1]pentadec-1(14)-en-7-one