Using CC(C)OC(=O)N[C@H]1Cc2c(n(C[C@@H]3[C@@H](O)CCN3C(=O)OC(C)(C)C)c3ccc(C#N)cc23)C1, O=C(O)CCl to produce CC(C)OC(=O)N[C@H]1Cc2c(n(C[C@@H]3[C@H](OC(=O)CCl)CCN3C(=O)OC(C)(C)C)c3ccc(C#N)cc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.