Using CCOC(=O)[C@H]1CC[C@@H](c2ccc(OC)c(C)c2C)N1, O=C(Cl)CCl to produce CCOC(=O)[C@H]1CC[C@@H](c2ccc(OC)c(C)c2C)N1C(=O)CCl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.