CC(C)CO/N=C1/C[C@@H](O)[C@@H](O)[C@H]2[C@@H]1CC[C@@H]1C(=O)N(C3CCCCC3)C(=O)[C@H]12
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?