N#CCCN(C(=O)COC(=O)C1CCN(S(=O)(=O)c2ccccc2C(F)(F)F)CC1)c1ccccc1
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?