O=C(Nc1nnc(S)[nH]1)C(=O)C(c1cnc2ccc([N+](=O)[O-])cc2n1)[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?