C=C1C(=O)O[C@@H]2C[C@@H](C)[C@@H]3[C@@H](OC4OC(COC(C)=O)C(O)C(O)C4O)CC(=O)[C@@]3(C)C[C@H]12
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?