Using O=C(O)C=Cc1cnc(-c2ccc(F)cc2)nc1, Nc1nccs1 to produce O=C(C=Cc1cnc(-c2ccc(F)cc2)nc1)Nc1nccs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.