Using COc1ccc(C(NC(=O)OC(C)(C)C)C2CCC(=O)CC2)cc1 to produce COc1ccc(C(NC(=O)OC(C)(C)C)C2CCC(O)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.