Cc1ccc(S(=O)(=O)N2C[C@@H](C)[C@]3(C2)[C@H](O)[C@H](OC(=O)Nc2cccs2)C[C@H]2C(=O)N(c4ccccc4)C(=O)[C@H]23)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?