Cc1noc(C)c1NC(=O)Nc1cccc2c1O[C@H](CN(C)S(=O)(=O)c1ccc(F)cc1)[C@@H](C)CN([C@H](C)CO)C2=O
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?