CCN1C[C@@H]2[C@@H]3C(=O)N(Cc4ccccc4)C(=O)[C@@H]3[C@](CC)(C(=O)OC)N2/C1=N/C1CCCCC1.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. This compound should contain a more electronegative atom (more electronegative than hydrogen) with lone electron pairs. Then it can attract protons from a donor. Moreover, the electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?