O=C1C[C@@H](O)[C@@H](O)[C@@H]2[C@@H]1CC[C@H]1C(=O)N(Cc3ccc4c(c3)OCO4)C(=O)[C@H]12
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?