O=C(CN1C(=O)/C(=C2\SC(=S)N(CCS(=O)(=O)O)C2=O)c2ccccc21)Nc1cccc(Br)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?