Using COC(=O)c1ccc(C(=O)CNC(=O)OC(C)(C)C)nc1 to produce COC(=O)c1ccc(C(O)CNC(=O)OC(C)(C)C)nc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.