C=C(C)[C@@H]1C2C(=O)O[C@H]1[C@H]1OC(=O)[C@@]34OC3C[C@]2(O)[C@@]14C
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?