CCOC(=O)CCN1C(=O)[C@H]2CC[C@@H]3/C(=N\O[C@@H]4O[C@@H](COC(C)=O)[C@@H](OC(C)=O)[C@@H](OC(C)=O)[C@H]4OC(C)=O)C[C@@H](O)[C@@H](O)[C@@H]3[C@@H]2C1=O
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?