Using COC(=O)C(CNC(C)=O)c1ccc(C(=O)OC(C)(C)C)cc1 to produce CC(=O)NCC(C(=O)O)c1ccc(C(=O)OC(C)(C)C)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.