Cc1ccccc1S(=O)(=O)N1[C@H](c2ccc(Cl)cc2)CC=C(C(=O)O)[C@@H]1c1ccc(Cl)cc1
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?