Using CCOC(=O)c1ccc2oc(S)nc2c1, CC(C)(C)OC(=O)CNCCCCl to produce CCOC(=O)c1ccc2oc(SCCCNCC(=O)OC(C)(C)C)nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.