Using Nc1ccc(CCN2CCCN(CC(=O)O)CCNCCCN(CC(=O)O)CC2)cc1, S=C(Cl)Cl to produce O=C(O)CN1CCCN(CCc2ccc(N=C=S)cc2)CCN(CC(=O)O)CCCNCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.