Using CC1NCCc2ccccc21, O=C(O)c1cc2ncc(Br)cn2n1 to produce CC1c2ccccc2CCN1C(=O)c1cc2ncc(Br)cn2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.