O=C1N[C@@H](c2ccccc2)COC(=O)[C@@H](Cc2ccc(F)cc2)CC/C=C/C[C@@H]1CC(=O)N(CCO)Cc1ccccc1
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?