Using CCOP(=O)(OCC)OCC, CC(=O)O[C@@H]1[C@H](O)[C@@H](CO)O[C@H]1c1nc(C(N)=O)c[se]1 to produce CC(=O)O[C@@H]1[C@H](O)[C@@H](COP(=O)(O)O)O[C@H]1c1nc(C(N)=O)c[se]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.