Using NCCN1CCCC1, O=C1Nc2ccccc2S/C1=C\c1c[nH]c2cc(C(=O)O)ccc12 to produce O=C1Nc2ccccc2S/C1=C\c1c[nH]c2cc(C(=O)NCCN3CCCC3)ccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.