Using C[C@@H]1Nc2cc(C#N)ccc2N(Cc2c(C3CC3)cnc3ccccc23)C(=O)[C@H]1NC(=O)OC(C)(C)C to produce C[C@@H]1Nc2cc(C#N)ccc2N(Cc2c(C3CC3)cnc3ccccc23)C(=O)[C@H]1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.