Using Cc1cc2ccc(C=CCCCN3CCN(c4cccc(Cl)c4Cl)CC3)nc2[nH]c1=O to produce Cc1cc2ccc(CCCCCN3CCN(c4cccc(Cl)c4Cl)CC3)nc2[nH]c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.