Using NCC(=O)c1ccc(Br)cc1, COC(=O)N1CC(=O)N2C(CCC2C(=O)O)C1 to produce COC(=O)N1CC(=O)N2C(CCC2C(=O)NCC(=O)c2ccc(Br)cc2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.