CCOC(=O)[C@@H]1ON2OC(OC3CCCC3(c3ccccc3)c3ccccc3)C(OC(C)=O)[C@H]3OC(=O)[C@@H]1C32
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?