Using Nc1nc2c(s1)CCOc1cc(Br)ccc1-2, C[Si](C)(C)N=[N+]=[N-] to produce [N-]=[N+]=Nc1nc2c(s1)CCOc1cc(Br)ccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.