Using CN(C)C=O, O=C1NCC(c2ccc(Cl)cc2)c2cc(Br)sc21 to produce CN1CC(c2ccc(Cl)cc2)c2cc(Br)sc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.