4-Butyl-1,2-dihydro-5-((1-adamantanecarbonyl)oxy)-1,2-diphenyl-3H-pyrazol-3-one 87792-13-0 SP 123 Tricyclo(3.3.1.1(sup 3,7))decane-1-carboxylic acid, 2,5-dihydro-4-butyl-1,2-diphenyl-5-oxo-1H-pyrazol-3-yl ester