COc1ccc(S(=O)(=O)N(C)C[C@H]2Oc3ccc(NS(=O)(=O)c4ccc(F)cc4)cc3C(=O)N([C@H](C)CO)C[C@@H]2C)cc1
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?