O=C1C2C3C=CC([C@@H]2C(=O)N1C1CCCCC1)[C@H]1C(=O)N(C2CCCCC2)C(=O)C31
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?