1H-indene-3-carboxylic acid, 1-(4-pyridinylmethylene)-, 2-(dimethylamino)ethyl ester, (1E)- 2-(dimethylamino)ethyl (1E)-1-(pyridin-4-ylmethylene)-1H-indene-3-carboxylate InChI=1/C20H20N2O2/c1-22(2)11-12-24-20(23)19-14-16(13-15-7-9-21-10-8-15)17-5-3-4-6-18(17)19/h3-10,13-14H,11-12H2,1-2H3/b16-13