CC(=O)OC1[C@H](Oc2c(O)c(C)c3c4c2[C@@H](C)CC[C@@H]4[C@@H](C)C[C@@H]3C=C(C)C)OC[C@@H](O)[C@@H]1O
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?