COc1ccccc1-c1ccc(O[C@@H]2OC(C)(C)[C@H](OC)[C@@H](O)[C@H]2O)cc1C(=O)NCc1ccccc1
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?