Using O=c1c(Cc2ccccc2[N+](=O)[O-])nc2cccnc2n1-c1ccccc1 to produce Nc1ccccc1Cc1nc2cccnc2n(-c2ccccc2)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.