Cc1cn(-c2cc(NC(=O)c3ccc(C)c(NC(=O)c4cccc(-c5cnnc(O)c5)c4)c3)cc(C(F)(F)F)c2)cn1.O=C(O)C(F)(F)F
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?