1-(cyclopenta-2,4-dien-1-ylidenemethyl)-4-nitrobenzene InChI=1/C12H9NO2/c14-13(15)12-7-5-11(6-8-12)9-10-3-1-2-4-10/h1-9 benzene, 1-(2,4-cyclopentadien-1-ylidenemethyl)-4-nitro-