O=C(O)c1ccc2c(c1)C(=O)N(c1cccc(S(=O)(=O)Nc3cccc(C(F)(F)F)c3)c1)C2=O
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?