O=C(C[S+]([O-])CC(=O)N(c1ccccc1)C(C(=O)NC1CCCCC1)c1ccco1)Nc1ccc(F)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?