Using Cc1noc(CN(C(=O)OC(C)(C)C)[C@H]2C[C@H]2c2ccccc2)n1 to produce Cc1noc(CN[C@@H]2C[C@H]2c2ccccc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.