Moxidectin

Chemical Name: (2aE,2′R,4E,4′E,5′S,6R,6′S,8E,11R,15S,17aR,20R,20aR,20bS)-6′-[(1E)-1,3-Dimethylbut-1-enyl]-20,20b-dihydroxy-4′-(methoxyimino)-5′,6,8,19-tetramethyl-3′,4′,5′,6,6′,7,10,11,14,15,17a,20,20a,20b-tetradecahydrospiro[2H,17H-11,15-methanofuro[4,3,2-pq][2,6]benzodioxacyclooctadecine-13,2′-pyran]-17-one ((6R,23E,25S)-5O-demethyl-28-deoxy-25-[(1E)-1,3-dimethylbut-1-enyl]-6,28-epoxy-23-(methoxyimino)milbemycin B).