Cc1cc(C)nc(NS(=O)(=O)c2ccc(NC(=O)c3ccc(Cl)c4c(Nc5ccc(S(=O)(=O)Nc6nc(C)cc(C)n6)cc5)c5ccccc5nc34)cc2)n1
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?