... de(1-methylpropyl)-25-(1-methylethyl)avermectin A1a (ii)CAS NO.71751-41-2EINECS NO.265-610-3Molecular FormulaC48H72O14· ... ,44)51)58-38-21-36(53-10)43(30(8)56-38)59-37-20-35(52-9)40( ... -10H3;11-14,16-18,24-25,27,29-30,32-44,48-49,51H,15,19-23H2,1 ... +;12-11+,26-14+,31-13+/t25-,26+,28+,30+,31+,33-,34+,35+,36+,37+,38+,39+,40 ... +,42+,43-,44+,45-,47-,48-;25-,27-,29-,30-,32+,33-,34-,35-,36-,37-,38-,39+,40 ...