Cc1ccc(S(=O)(=O)N2[C@H](c3ccc4c(c3)OCO4)CC=C(C(=O)O)[C@@H]2c2cccc(Cl)c2)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?