Cc1c(C2(c3c(C)n(C)n(-c4ccccc4)c3=O)C(=O)Nc3ccc(F)cc32)c(=O)n(-c2ccccc2)n1C
Hydrogen bond acceptor is the chemical compound which contains the lone electron pairs that participate in the hydrogen bond formation. This compound should contain a more electronegative atom (more electronegative than hydrogen) with lone electron pairs. Then it can attract protons from a donor. Moreover, the electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?