Using C[C@@H]1CN(Cc2ccccc2)[C@@H](CN2CCOCC2)CN1C(=O)OC(C)(C)C to produce C[C@@H]1CN[C@@H](CN2CCOCC2)CN1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.