(1S,3E,5S,6R,7S,8R,9S,10S,12R,13E,15Z)-9,12,35,37-tetrahydroxy-5-methoxy-1,6,8,10,12,16,24,34-octamethyl-11,17,31-trioxo-2,32-dioxa-18,21,27-triazahexacyclo[17.12.6.020,28.029,36.030,33.021,26]heptatriaconta-3,13,15,19(37),20(28),22,24,26(27),29(30),33(34),35-undecaen-7-yl acetate