Using COc1ccc2c(c1)OC(C)(C)C(NC(=O)c1cc(Cl)ccc1OC)C2=O to produce COc1ccc2c(c1)OC(C)(C)C(NC(=O)c1cc(Cl)ccc1OC)C2O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.