calcium 4-butyl-1,2-diphenyl-3,5-pyrazolidinedione

5-pyrazolidinedione,4-butyl-1,2-diphenyl-calciumsalt

1,2-diphenyl-4-butyl-3,5-diketopyrazolidinecalciumsalt

Bis(4-butyl-3,5-dioxo-1,2-diphenylpyrazolidin-4-yl)calcium