Using O=S(=O)(c1ccccc1)n1cc(Cc2ccc(NCc3c(F)cccc3Cl)nc2)c2cccnc21 to produce Fc1cccc(Cl)c1CNc1ccc(Cc2c[nH]c3ncccc23)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.