O=C1/C(=C\c2cccc(Oc3ccccc3)c2)SC(c2ccccc2)N1c1cccc([N+](=O)[O-])c1
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?