Using C[O-], CCC[C@H](C)Oc1nc(N)c2nc(Br)n(C3CCCCO3)c2n1 to produce CCC[C@H](C)Oc1nc(N)c2nc(OC)n(C3CCCCO3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.