Cc1sc2ncn(CC(=O)N3CCN(c4ccc(F)cc4)CC3)c(=O)c2c1S(=O)(=O)N1CCN(c2ncccn2)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?