O=C(N1CCN(c2ccccc2)CC1)N(C(=O)C1(c2ccc(Cl)cc2)CCCC1)S(=O)(=O)c1ccccc1
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?