Using COC(=O)CCCN(C(=O)OC(C)C)c1cc(Cl)c(Br)cc1C(=O)OC to produce COC(=O)C1CCN(C(=O)OC(C)C)c2cc(Cl)c(Br)cc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.