Using Cc1cccc(C)c1CNc1c([N+](=O)[O-])ccn2c(C)c(C)nc12 to produce Cc1cccc(C)c1CNc1c(N)ccn2c(C)c(C)nc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.