N=C(N)Nc1ccc(CC(N)C(=O)NCC(=O)C(CC(=O)O)c2ncc(NC(=O)C(F)(F)F)o2)cc1.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. How many hydrogen bond acceptors does the molecule contain?