Using O=Cc1ccc(Br)nc1, Nc1ccccc1C(=O)Nc1cc2ccccc2cn1 to produce O=C(Nc1cc2ccccc2cn1)c1ccccc1NCc1ccc(Br)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.