O=C1[C@H]2[C@@H](C(=O)N1C1CCCCC1)[C@@H](c1ccc(F)cc1)N1C(=O)N(c3cccc(Br)c3)C(=O)[C@@]21Cc1ccccc1
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?