COC(=O)C1=C(c2ccc(-c3ccccc3)c(F)c2)C[C@@H]2CC[C@H]1N2C(=O)NCc1cccc2ccccc12
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?