C#CCCCO/N=C1\[C@@H]2CCn3c(=O)n(Cc4cc5c(cc4Cl)OCO5)c(=O)n3[C@H]2[C@H](O)[C@H]2O[C@H]12
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?