CC1CCc2nc3ccc(S(=O)(=O)N4CCC(C(=O)NC(C)c5ccccc5)CC4)cc3c(C(=O)O)c2C1
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?