CC(C)CO/N=C1/C[C@@H](O)[C@@H](O)[C@@H]2[C@@H]3C(=O)N(Cc4ccccc4)C(=O)[C@H]3CC[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?