Using O=C([O-])O, CC(C)(C)OC(=O)N1CCN(C[C@@H](O)CN(Cc2ccccc2)Cc2ccccc2)CC1 to produce CO[C@H](CN1CCN(C(=O)OC(C)(C)C)CC1)CN(Cc1ccccc1)Cc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.