O=C(CSc1ncc2c(n1)-c1cc(Cl)ccc1N(Cc1ccccc1)S2(=O)=O)Nc1ccc(F)cc1F
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?