Using BrCCCCCCN1CCCCCC1, O=C1Nc2ccccc2Nc2ccccc21 to produce O=C1Nc2ccccc2N(CCCCCCN2CCCCCC2)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.