[1,1'-Biphenyl]-2-carboxylic acid,4'-[(2-butyl-4,5,6,7-tetrahydro-4,7-dioxo-1H-imidazo[4,5-d]pyridazin-1-yl)methyl]-, 1,1-dimethylethyl ester
CAS No. 140199-53-7