5-phenyl-penta-2,4-dienoic acid, cinnamylidenacetic acid, 2,4-Pentadienoic acid, 5-phenyl-, 5-phenyl-2,4-pentadienoic acid, cis-trans--5-phenylpentadienoic acid, 5-Phenyl-penta-2,4-diensaeure, 5-phenyl-2,4-pentadienic acid
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