Using CCCc1cc(-c2ccc(C(CCl)NC(=O)c3c(F)cccc3F)cc2)ccc1OC(C)=O to produce CCCc1cc(-c2ccc(C3COC(c4c(F)cccc4F)=N3)cc2)ccc1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.