4'-phenyl-4',5'-dihydrospiro[indene-2,3'-pyrazol]-1(3H)-one InChI=1/C17H14N2O/c20-16-14-9-5-4-8-13(14)10-17(16)15(11-18-19-17)12-6-2-1-3-7-12/h1-9,15H,10-11H spiro[2H-indene-2,3'-[3H]pyrazol]-1(3H)-one, 4',5'-dihydro-4'-phenyl-