Using NCCc1cccs1, NC(=O)c1cnc(Oc2ccc(C=O)cc2F)cn1 to produce NC(=O)c1cnc(Oc2ccc(CNCCc3cccs3)cc2F)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.