CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](Oc2ccc(-c3ccc(Oc4ccccc4)cc3)c(C(=O)NCCc3ccccc3)c2)OC1(C)C
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?