Cl.O=C(Nc1ccc(C(=O)OC[C@@H]2CCCN3CCCC[C@H]23)cc1)c1cccc(Br)c1
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?