Using CSCCC(=O)Cl, CC(C)(C)OC(=O)Nc1sc(Cl)nc1Cl to produce CSCCC(=O)N(C(=O)OC(C)(C)C)c1sc(Cl)nc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.