2,4-Cyclohexadien-1-one, 6-(5-(2,4-dihydroxyphenyl)-2,4-pentadienylidene)-3-hydroxy- 6-(5-(2,4-Dihydroxyphenyl)-2,4-pentadienylidene)-3-hydroxy-2,4-cyclohexadien-1-one 73806-35-6 NSC 77130