COC1OC(C)C(OC(=O)C(C)(C)C)C(OS(=O)(=O)c2ccc(C)cc2)C1OS(=O)(=O)c1ccc(C)cc1
The donor in a hydrogen bond is usually a strongly electronegative atom such as N, O, or F that is covalently bonded to a hydrogen bond. How many hydrogen bond donors does the molecule have?