C[C@@H]1CC=C[C@H]2[C@H]1C(=O)N(Cc1ccccc1)[C@H]2c1ccc2ccccc2c1Br
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?