1 15Q 2-chloro-3'-fluoro-3-[(E)-(hydroxyimino)methyl]biphenyl-4,4'-diol 1.000 2 7G2 3-fluoro-3'-[(E)-(hydroxyimino)methyl][1,1'-biphenyl]-4,4'-diol 0.947 3 7G3 3-[(z)-(hydroxyimino)methyl][1,1'-biphenyl]-4,4'-diol 0.895 4 4HB 4,4'-dihydroxybiphenyl 0.737