(E)-4-(3-hydroxymethyl-but-2-enyl)-1-(4-hydroxyphenyl)-2-phenyl-3,5-pyrazolidinedione
E-1,2-diphenyl-3,5-dioxo-4-(3'-hydroxymethyl-but-2'-enyl)pyrazolidine
Benzoic acid 2-[((E)-4-acetoxy-3-methyl-but-2-enyl)-benzoyl-amino]-but-3-enyl ester
(E)-4-(3-acetoxymethyl-but-2-enyl)-1-(4-β-methoxyethoxymethoxy)-phenyl-2-phenyl-3,5-pyrazolidinedione