CC(=O)OCC1OC(OC(C)(C)CC/C=C(\C)[C@@H]2C/C=C(\C)CC/C=C(\C)CC2)C(O)C(O)C1OC(C)=O
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?