Cc1ccc(N2C(=O)C3CC(c4ccccc4)=C4C5C=CC(C6C(=O)N(c7ccc(C)cc7)C(=O)C56)C4C3C2=O)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?