Cc1ccc(NC(=O)c2cc(S(=O)(=O)Nc3n[nH]c(=O)[nH]3)c(SSc3cc(Cl)c(C(=O)Nc4ccc(C)cc4)cc3S(=O)(=O)Nc3n[nH]c(=O)[nH]3)cc2Cl)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?