CAS No 207308-30-3 , (4R,5S,6S,7S,9R,11E,13E,15R,16R)-6-[4-(dimethylamino)-3,
5-dihydroxy-6-methyloxan-2-yl]oxy-16-ethyl-4-hydroxy-15-[(5-hydroxy-3,
4-dimethoxy-6-methyloxan-2-yl)oxymethyl]-5,9,
13-trimethyl-7-[(E)-4-oxopent-2-enyl]-1-oxacyclohexadeca-11,13-diene-2,
10-dione