Using COCCl, CCOC(=O)c1nn(-c2ccccc2)c(=O)c2[nH]c3ccc(F)cc3c12 to produce CCOC(=O)c1nn(-c2ccccc2)c(=O)c2c1c1cc(F)ccc1n2COC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.