Using CN1CCNCC1, O=C(O)c1cnc(S)n1Cc1cc(F)cc(F)c1 to produce CN1CCN(C(=O)c2cnc(S)n2Cc2cc(F)cc(F)c2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.