Using CC(C)(C)OC(=O)O, COC(OC)C(CN)SCc1ccccc1 to produce COC(OC)C(CNC(=O)OC(C)(C)C)SCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.