(25S)-cikloheksil-25-de(sek-butil)-5-demetoksi-5-okso-22,23-dihidroavermektin A1a
(1S)-1,5:7,10-dianhydro-12,13-bis-O-[terc-butyl(dimetyl)silyl]-2,3,4,6,8,11-hexadeoxy-1-2-[(2S,5S)-5-(3-hydroxypropyl)-3-metylidéntetrahydrofurán-2-yl]etyl-3-metyl-9-O-metyl-4-metylidén-8-[(fenylsulfonyl)metyl]-D-arabino-D-altro-tridecitol