1-(4-methoxyphenyl)-6-[4-(2-oxopiperidin-1-yl)phenyl]-3-(trifluoromethyl)-4,5-dihydropyrazolo[5,4-c]pyridin-7-one 1-(4-methoxyphenyl)-6-[4-(2-oxo-1-piperidyl)phenyl]-3-(trifluoromethyl)-4,5-dihydropyrazolo[5,4-c]pyridin-7-one 1-(4-methoxyphenyl)-6-[4-(2-oxo-1-piperidinyl)phenyl]-3-(trifluoromethyl)-4,5-dihydropyrazolo[5,4-c]pyridin-7-one 6-[4-(2-keto-1-piperidyl)phenyl]-1-(4-methoxyphenyl)-3-(trifluoromethyl)-4,5-dihydropyrazolo[5,4-c]pyridin-7-one