CC(=O)OC1C(=O)[C@@]2(C)C(O)CC3OC[C@]3(OC(C)=O)C2C(OC(=O)c2ccccc2)[C@]2(O)CC(OC(=O)C(O)C(NC(=O)c3ccccc3)c3ccccc3)C(C)=C1C2(C)C
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?