N#Cc1ccc(CSC2=C(c3ccc(Cl)cc3)S/C(=C3\SC(SCc4ccc(C#N)cc4)=C(c4ccc(Cl)cc4)S3)S2)cc1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?