tert-butyl (Z)-2-{5-[(1,2-dihydro-1,5-dimethyl-3-oxo-2-phenyl-3H-pyrazol-4-yl)methylene]-2,4-dioxo-3-thiazolidine}acetate
1',4',6',7'-tetrahydro-6'-(1,2-dihydro-1,5-dimethyl-3-oxo-2-phenyl-3H-pyrazol-4-yl)-1'-methyl-4'-[3-(acetic acid tert-butyl ester)-2,4-dioxo-thiazolidin-5-yl]spiro[thiazolidine-5,5'-[5H]indazol]-2,3',4(2'H)-trione-3-acetic acid tert-butyl ester
[5-(3-phenylpropylidene)thiazolidine-2,4-dione-3-yl]acetic acid
2-(2,4-dioxo-1,3-thiazolidin-3-yl)acetic acid