O=C1Nc2c(c(=O)[nH]c(=O)n2-c2ccc(Cl)cc2)C1(NS(=O)(=O)c1ccccc1)C(F)(F)F
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?