Using O=C(c1sccc1Cl)N1CCC(N2CCC(n3c(=O)[nH]c4ccccc43)CC2)CC1 to produce O=c1[nH]c2ccccc2n1C1CCN(C2CCN(Cc3sccc3Cl)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.