Using CN1CCN2c3ccccc3NCCC2C1, O=Cc1ccc(Br)cc1 to produce CN1CCN2c3ccccc3N(Cc3ccc(Br)cc3)CCC2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.