CN1C(=O)N/C(=C\c2ccc(S(=O)(=O)N/N=C\C(O)C(O)C(O)C(O)CO)cc2)C1=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?