Fusidic Acid EP Impurity D

Chemical Name: ent-(17Z)-3β,11β-dihydroxy-17-[(6R)-6-(1-hydroxy-1-methylethyl)-2-oxodihydro-2H-pyran-3(4H)-ylidene]-4β,8,14-trimethyl-18-nor-5β,10α-androstan-16α-yl acetate ((24S)-24,25-dihydro-24,25-dihydroxyfusidic acid 21,24-lactone),

Smile: C[C@@]1(C[C@]/2([H])OC(C)=O)[C@@]3(C)CC[C@@]4([H])[C@@](C)([H])[C@@](O)([H])CC[C@]4(C)[C@]3([H])[C@@](O)([H])C[C@@]1([H])C2=C5C(O[C@@](C(C)(C)O)([H])CC\5)=O