Using CC(C)(C)OC(=O)N[C@@H](C#N)COCc1cccc(C(=O)NCCC#N)c1, C[Si](C)(C)N=[N+]=[N-] to produce CC(C)(C)OC(=O)N[C@@H](C#N)COCc1cccc(-c2nnnn2CCC#N)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.