CN(C)c1ccc(/C=c2/c3ccccc3n3c2cc(C24CC5CC(CC(C5)C2)C4)[n+]3C)cc1.O=S(=O)([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. How many hydrogen bond acceptors does the molecule contain?