Using CO[C@]12CN(Cc3ccccc3)C[C@H]1CN(C(=O)OC(C)(C)C)C2 to produce CO[C@]12CNC[C@H]1CN(C(=O)OC(C)(C)C)C2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.