Selamectin Impurity C

Selamectin Impurity C (EP):(2aE,2'R,4E,5'S,6S,6'S,7S,8E,11R,15S,17aR,20Z,20aR,20bS)-6'-cyclohexyl-7,20b-dihydroxy-20-(hydroxyimino)-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.

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