Eprinomectin B1b
eprinomectin b1b
4''-(acetylamino)-5-O-demethyl-25-de(1-methylpropyl)-4''deoxy-25-(1-methylethyl)-, (4''R)-Avermectin A1a
4''-(acetylamino)-5-o-demethyl-25-de(1-methylpropyl)-4''deoxy-25-(1-methylethyl)-, (4''r)-avermectin a1a