Using CC=O, CC(C)OC(=O)N[C@H]1Cc2c(n(C[C@H]3NCC[C@@H]3O)c3ccc(C#N)cc23)C1 to produce CCN1CC[C@H](O)[C@H]1Cn1c2c(c3cc(C#N)ccc31)C[C@H](NC(=O)OC(C)C)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.