CC(=O)O[C@@H]1[C@@H](CN=[N+]=[N-])OCO[C@H](CN=[N+]=[N-])[C@H]1OC(C)=O
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?