Using COc1ccc(-c2c[nH]c3c(OC)ccc(F)c3c2=O)cc1 to produce O=c1c(-c2ccc(O)cc2)c[nH]c2c(O)ccc(F)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.