COc1ccc([C@]23CCC4(OCC(C)(C)CO4)[C@H]4CON(O[C@H](O[C@@H]5CCCCC5C(C)(C)c5ccccc5)C2)[C@@H]43)cc1OC
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?