Using COc1cc(C=O)c(OCc2cccnc2C#N)cn1, [N-]=[N+]=[N-] to produce COc1cc(C=O)c(OCc2cccnc2-c2nn[nH]n2)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.