CC(=O)O[C@H]1CC[C@@]2(C)C(=CC[C@H]3[C@@H]2CC[C@@]2(C)[C@@H](c4cc(C(F)(F)F)n(C(C)=O)n4)CC[C@@H]32)C1
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?