CC(=O)OC[C@]12CC[C@@H]3[C@@]4(C)CCCC(C)(C)[C@@H]4CC[C@@]3(C)[C@@H]1C[C@H](C1=CC(=O)O[C@H]1OC(C)=O)O2
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?