(6R,25R)-5-Demethoxy-28-deoxy-6,28-epoxy-25-ethyl-5-(hydroxyimino)milbemycin BSpiro[11,15-methano-2H,13H,17H-furo[4,3,2-pq][2,6]benzodioxacyclooctadecin-13,2'-[2H]pyran], Milbemycin B deriv.; 5-Ketomilbemycin A4 Oxime; 5-Oxomilbemycin A4 5-Oxime; Milbemycin A4 Oxime
