COc1ccc(S(=O)(=O)Nc2ccc3c(c2)C(=O)N([C@H](C)CO)C[C@H](C)[C@@H](CN(C)S(=O)(=O)c2ccc(OC)cc2)O3)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?