CC(=O)OC1OC(c2ccoc2)C[C@@]12C1CCC3O[C@]3(C)[C@]1(C)[C@H](OC(C)=O)[C@H](OC(C)=O)[C@H]2C
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?