Nc1nc2c(nc(Br)n2[C@@H]2O[C@H]3COP(=O)([O-])O[C@@H]3[C@H]2O)c(=O)[nH]1.[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?