CC[C@]12c3[nH]c4ccccc4c3CCN1C(=O)C(CC(=O)NCCc1ccccn1)C[C@@H]2C(=O)N1CCN(C(=O)c2ccco2)CC1
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?