Cc1cc(C)nc(NS(=O)(=O)c2ccc(NC(=O)c3cccc4c(Nc5ccc(S(=O)(=O)Nc6nc(C)cc(C)n6)cc5)c5ccc(Cl)cc5nc34)cc2)n1
Hydrogen bond acceptor is the chemical compound which contains the lone electron pairs that participate in the hydrogen bond formation. This compound should contain a more electronegative atom (more electronegative than hydrogen) with lone electron pairs. Then it can attract protons from a donor. Moreover, the electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?