... ) mixture with 5-O-demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)avermectin A1a (ii)CAS NO.71751- ... NO.265-610-3Molecular FormulaC48H72O14·C47H70O14Molecular Weight1732.14InChIInChI=1/C48H72O14.C47H70O14/c1-11-25(2)43-28 ... (53-9)41(50)30(7)56-38;1-24(2)41-27(5)16-17- ... +,28+,30+,31+,33-,34+,35+,36+,37+,38+,39+,40-,41+,42+,43-,44+,45-,47 ... -,29-,30-,32+,33-,34-,35-,36-,37-,38-,39+,40-,41+,42-,43-,44+,46+,47 ...