COC(=O)C1=C(C(=O)OC)[C@@H]2Nc3ccccc3[C@@]23C[C@@H](C(=O)OC)N(S(=O)(=O)c2ccc(C(F)(F)F)cc2)C3=N1
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?