Using COc1ccc2c(c1)-c1c(ccn1C[C@@H](C)N=[N+]=[N-])CC2 to produce COc1ccc2c(c1)-c1c(ccn1C[C@@H](C)N)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.