CC(C)(C)[S+]([O-])N1Cc2cc(C(=O)NCc3ccc4c(c3)OCO4)nc(-c3cccc(-c4cc5ccccc5o4)c3)c2[C@@H]1CCO
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?