CC[C@@]1(C(=O)OC)N[C@H](CN(C)C(=O)c2ccc(F)cc2)[C@@H]2C(=O)N(C)C(=O)[C@@H]21.O=C(O)C(F)(F)F
Hydrogen bond acceptor is the chemical compound which contains the lone electron pairs that participate in the hydrogen bond formation. How many hydrogen bond acceptors does the molecule contain?