CC(=O)Oc1ccc2c(c1)CC[C@@H]1C2[C@@H](O[N+](=O)[O-])C[C@@]2(C)C1CC[C@@H]2O
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?