Using CI, Cc1nccc2c1c(=O)n(C)c1cc(OC[C@H](CC(C)C)NC(=O)OC(C)(C)C)c(C#N)cc21 to produce Cc1nccc2c1c(=O)n(C)c1cc(OC[C@H](CC(C)C)N(C)C(=O)OC(C)(C)C)c(C#N)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.