Using O=C(O)CCc1cc(Br)c(OCc2cccc([N+](=O)[O-])c2)c(Br)c1 to produce Nc1cccc(COc2c(Br)cc(CCC(=O)O)cc2Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.