COc1ccc(CN2CCN(C(=O)C3CCC(CNS(=O)(=O)c4ccc(C)cc4)CC3)CC2)c(OC)c1OC
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?