1H-pyrrole-3-carboxaldehyde, 5-(chloromethyl)-4,5-dihydro-1-(2-nitrobenzoyl)- 5-(chloromethyl)-1-(2-nitrobenzoyl)-4,5-dihydro-1H-pyrrole-3-carbaldehyde InChI=1/C13H11ClN2O4/c14-6-10-5-9(8-17)7-15(10)13(18)11-3-1-2-4-12(11)16(19)20/h1-4,7-8,10H,5-6H