COc1ccc(-c2ccc3c(c2)[C@@H]2C[C@H](N(C)S(=O)(=O)c4ccccc4)[C@H]([C@H](C)O)C(=O)N2CC3)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?