Using CCCC(Br)C(=O)OCC, O=C1NCC(COc2cccc(Cl)c2)O1 to produce CCCC(C(=O)OCC)N1CC(COc2cccc(Cl)c2)OC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.