Using O=C(O)c1cc(Cl)cc(Br)c1, Nc1ccc(-c2ccc(Cl)cc2)cc1 to produce O=C(Nc1ccc(-c2ccc(Cl)cc2)cc1)c1cc(Cl)cc(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.