Using Cn1ncnc1CO, Fc1ccccc1-c1nnc2cc(-c3cccs3)c(Cl)nn12 to produce Cn1ncnc1COc1nn2c(-c3ccccc3F)nnc2cc1-c1cccs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.