Using Cc1c(C(=O)O)cccc1[N+](=O)[O-], NCC(O)CN1CCc2ccccc2C1 to produce Cc1c(C(=O)NCC(O)CN2CCc3ccccc3C2)cccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.