Cc1ccc(N2C(=O)[C@@H]3[C@@H]4O[C@@H]([C@H]5ON=C(c6ccccc6Cl)[C@H]54)[C@@H]3C2=O)cc1
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?