C[C@H](CCC(=O)NCCS(=O)(=O)[O-])C1CCC2C3C(C[C@H](O)C21C)C1(C)CC[C@@H](O)CC1C[C@H]3O.[Na+]
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?