CC(=O)NC(CC(C)C)C(=O)NC(CO)C(=O)NC(CCC(=O)O)C(=O)NC(C)C(=O)NC(CC(C)C)C(N)=O.O=C(O)C(F)(F)F
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?