根据下文回答第 173~176 题。A.5,7,4'-三羟基黄酮B.5,7,3',4'-四羟基黄酮C.3,5,7,4'-四羟基黄酮D.3,5,7,3',4'-五羟基黄酮E.3,5,7,3',4',5'-六羟基黄酮第 173 题 山奈酚的结构为( )

根据下文回答第 173~176 题。

A.5,7,4'-三羟基黄酮

B.5,7,3',4'-四羟基黄酮

C.3,5,7,4'-四羟基黄酮

D.3,5,7,3',4'-五羟基黄酮

E.3,5,7,3',4',5'-六羟基黄酮

第 173 题 山奈酚的结构为( )


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