Using CCBr, CCOc1cc(C=O)c([N+](=O)[O-])c([N+](=O)[O-])c1O to produce CCOc1cc(C=O)c([N+](=O)[O-])c([N+](=O)[O-])c1OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.