Using CON(C)C(=O)[C@H]1CCN(C(=O)OC(C)(C)C)C1, CCOP(C)(=O)OCC to produce CCOP(=O)(CC(=O)C1CCN(C(=O)OC(C)(C)C)C1)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.