2,3-DIDEHYDRO-5-O-DEMETHYL-25-DE(1-METHYLPROPYL)-25-(1-METHYLETHYL)-3,4,22,23-TETRAHYDROAVERMECTIN A1A
2,3-didehydro-5-o-demethyl-25-de(1-methylpropyl)-25-(1-methylethyl)-3,4,22,23-tetrahydroavermectin a1a