COCC(=O)N(C)C[C@H]1N[C@@](C)(C(=O)OC)[C@H]2C(=O)N(Cc3ccccc3)C(=O)[C@@H]12.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?