Fusidic Acid EP Impurity B

Chemical Name: ent-(17Z)-3β,11β-dihydroxy-17-[(6SR)-6-hydroxy-7,7-dimethyl-2-oxooxepan-3-ylidene]-4β,8,14-trimethyl-18-nor-5β,10α-androstan-16α-yl acetate (24,25-dihydro-24,25-dihydroxyfusidic acid 21,25-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(OC(C)(C)C(O)CC\5)=O