Cc1c([N+](=O)[O-])cc(C(=O)Oc2ccc(Br)cc2C(=S)N2CCCCC2)cc1[N+](=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?