Using CCOC(=O)[C@@H]1C[C@H]1c1nnc2ccc(-c3c(-c4ccc(F)cc4)nc4occn34)cn12 to produce O=C(O)[C@@H]1C[C@H]1c1nnc2ccc(-c3c(-c4ccc(F)cc4)nc4occn34)cn12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.