COc1ccc(S(=O)(=O)N(C)C[C@H]2Oc3ccc(NS(=O)(=O)c4cccs4)cc3CC(=O)N([C@H](C)CO)C[C@H]2C)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?