3-((E)-2-{4-[(E)-2-(2,5-dihydropyridin-3-yl)vinyl]phenyl}vinyl)pyridine InChI=1/C20H16N2/c1-3-19(15-21-13-1)11-9-17-5-7-18(8-6-17)10-12-20-4-2-14-22-16-20/h1-16H/b11-9+,12-10 pyridine, 2,5-dihydro-3-[(E)-2-[4-[(E)-2-(3-pyridinyl)ethenyl]phenyl]ethenyl]-