Using OC(c1ccc(Cl)cc1)c1ccc(Br)cc1, O=C1c2ccccc2C(=O)N1CCO to produce O=C1c2ccccc2C(=O)N1CCOC(c1ccc(Cl)cc1)c1ccc(Br)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.