3H-pyrazol-3-one, 4,4'-butylidenebis[1,2-dihydro-1,5-dimethyl-2-phenyl-;4,4'-(butane-1,1-diyl)bis(1,5-dimethyl-2-phenyl-1,2-dihydropyrazol-3-one);4,4'-Butane-1,1-diylbis(1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one)
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