Using O=C(Nc1ccncc1)C(=O)c1cn(Cc2ccc([N+](=O)[O-])cc2)c2ccccc12 to produce Nc1ccc(Cn2cc(C(=O)C(=O)Nc3ccncc3)c3ccccc32)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.