(3,5-Dioxo-4-(3-oxobutyl)-1,2-diphenyl-4-pyrazolidinyl)methyl benzeneacetate 42190-64-7 BRN 0729617 Benzeneacetic acid, (3,5-dioxo-4-(3-oxobutyl)-1,2-diphenyl-4-pyrazolidinyl)methyl ester