CCN1C(=O)[C@H]2[C@@H](C1=O)[C@H]1CN=C(SCc3ccccc3)N1[C@@]2(Cc1ccccc1)C(=O)OC.O=C(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?