(12s,25s)-5,20,31-trimethoxy-11,26-dimethyl-2,18-dioxa-11,26-diazaheptacyclo[23.6.2.214,17.119,23.03,8.07,12.029,33]hexatriaconta-1(31),3,5,7,14,16,19(34),20,22,29,32,35-dodecaene-4,30-diol (non-prefe