Using O=C1Nc2cccnc2Nc2ccccc21, BrCCCCCCN1CCCCC1 to produce O=C1Nc2cccnc2N(CCCCCCN2CCCCC2)c2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.