Using C[O-], NC1=N[C@@]2(CO1)c1cc(Br)ccc1Oc1c2cc(Cl)nc1F to produce COc1nc(Cl)cc2c1Oc1ccc(Br)cc1[C@@]21COC(N)=N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.