Using COc1ccc([N+](=O)[O-])c(NC(CO)CO)n1, COC(C)(C)OC to produce COc1ccc([N+](=O)[O-])c(NC2COC(C)(C)OC2)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.