4-(3,5-Di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one 1g

4-(3,5-Di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one 1g