Using C[O-], CCCCc1ncc(CBr)c(NCc2ccc(-c3ccccc3-c3nnn[nH]3)cc2)n1 to produce CCCCc1ncc(COC)c(NCc2ccc(-c3ccccc3-c3nnn[nH]3)cc2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.