Using ClCCl, CCCCc1nc2c(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)nc3c(c2n1CCSc1ccccc1)CCCC3 to produce CCCCc1nc2c(N)nc3c(c2n1CCSc1ccccc1)CCCC3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.