COc1ccccc1[C@@H]1C(c2cccc(C)c2)=NN(c2ccc(Br)cc2)[C@H]1C(=O)N1CCOC1=O
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?