Using [N-]=[N+]=[N-], Cn1c2ccc(C#N)cc2c(=O)c2cccnc21 to produce Cn1c2ccc(-c3nnn[nH]3)cc2c(=O)c2cccnc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.