Using COC(=O)[C@H]1C[C@@H](Nc2ccc(-c3nc4ccc(C5(c6ccccc6)CC5)nc4s3)c(F)c2)C1 to produce O=C(O)[C@H]1C[C@@H](Nc2ccc(-c3nc4ccc(C5(c6ccccc6)CC5)nc4s3)c(F)c2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.