Using COC(=O)c1ccc(CNC(=O)c2cc(OC(=O)C(C)(C)C)ccc2Cl)cc1 to produce COC(=O)c1ccc(CNC(=O)c2cc(O)ccc2Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.