O=C(O)C(F)(F)F.O=S(=O)(c1ccc2ccccc2c1)N1CCN(S(=O)(=O)c2c(F)cccc2F)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?