COc1ccc(Br)cc1CN(C)CC(=O)Nc1cccc(S(=O)(=O)N2CCCC2)c1.O=C(O)C(=O)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?