CCOC(=O)N1CCN(S(=O)(=O)c2ccc(C(=O)N(CCCN(C)C)c3nc4cc(OC)ccc4s3)cc2)CC1.Cl
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?