Using CO[C@@]1(N=[N+]=[N-])C(=O)N2C(C(=O)OC(C)(C)C)=C(COC(C)=O)CS[C@@H]21 to produce CO[C@@]1(N)C(=O)N2C(C(=O)OC(C)(C)C)=C(COC(C)=O)CS[C@@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.