CCN(CC(=O)Nc1ccc(NC(C)=O)cc1)C(=O)c1cccc(S(=O)(=O)N2CCc3ccccc3C2)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?