InChI=1/C14H15NO6/c1-20-13(16)3-2-4-14(17)21-12-7-5-11(6-8-12)9-10-15(18)19/h5-10H,2-4H2,1H3/b10-9 methyl 4-[(E)-2-nitrovinyl]phenyl glutarate pentanedioic acid, methyl 4-[(E)-2-nitroethenyl]phenyl ester