COc1ccc([C@@H]2CC=C(C(=O)O)[C@H](c3ccc(C(C)(C)C)cc3)N2S(=O)(=O)c2ccc(C)cc2)cc1OC
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?