... demethylavermectin A1a (i) mixture with 5-O-demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)avermectin A1a (ii)CAS NO.71751 ... FormulaC48H72O14·C47H70O14Molecular Weight1732.14InChIInChI=1/C48H72O14.C47H70O14/c1-11-25(2)43-28(5)17-18-47(62-43) ... 8)56-38)59-37-20-35(52-9)40(49)29(7)55-37/h12-15,17-19,25-26,28,30- ... +,42+,43-,44+,45-,47-,48-;25-,27-,29-,30-,32+,33-,34-,35-,36-,37-,38-,39+,40-,41+,42-,43 ...