C/C=C\C(CC(=O)OC)CC(=O)N(CCC1CN(S(=O)(=O)C(F)(F)F)c2ccccc21)Cc1ccc(OC)cc1OC
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?