CCCCNC(=O)C(C)N(CCN(C)C)C(=O)CCCN1C(=O)NC(c2ccc([N+](=O)[O-])cc2)C(C(=O)OCc2ccccc2)=C1C
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?