Using On1nnc2ccccc21, CC(C)(C)OC(=O)N1CCSC(C(=O)O)C1 to produce CC(C)(C)OC(=O)N1CCSC(C(N)=O)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.