Using CCOC(=O)CCNC(=O)c1ccc(C(=O)C2CC(C)(C)C2)cc1 to produce CCOC(=O)CCNC(=O)c1ccc(C(O)C2CC(C)(C)C2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.