CCOC(=O)[C@H]1[C@H]2COc3ccc(Cl)cc3[C@@H]2N2C(=O)c3cc(F)c(F)cc3NC(=O)[C@@]12C
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?