COC(=O)[C@@]12CCCN1[C@H](c1ccc(-c3ccc(F)cc3)c(OC)c1)[C@H]1C(=O)N(C)C(=O)[C@H]12.O=C(O)C(F)(F)F
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?