Using COC(=O)C(=O)c1c[nH]c2c(Br)cc(F)c(OCc3ccccc3)c12 to produce OCCc1c[nH]c2ccc(F)c(OCc3ccccc3)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.