(1E)-2,2,5-trimethylhexa-3,4-dienal (2,4-dinitrophenyl)hydrazone 3,4-hexadienal, 2,2,5-trimethyl-, (2,4-dinitrophenyl)hydrazone, (1E)- InChI=1/C15H18N4O4/c1-11(2)7-8-15(3,4)10-16-17-13-6-5-12(18(20)21)9-14(13)19(22)23/h5-6,8-10,17H,1-4H3/b16-10