Using O=C(Nc1ccc(C2(O)CN(C(=O)OCc3ccccc3)C2)c(F)c1)OCc1ccccc1 to produce O=C(Nc1ccc(C2CN(C(=O)OCc3ccccc3)C2)c(F)c1)OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.