COc1cc(/C=C/CNC[C@H]2O[C@@H](n3cnc(C(N)=O)n3)[C@H](O)[C@@H]2O)ccc1O
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?