Using N#CCOCC1(N)c2cc(Br)c(F)cc2Oc2ncc(Cl)cc21 to produce NC1=NC2(COC1)c1cc(Br)c(F)cc1Oc1ncc(Cl)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.