CC(C)CCC1(O)O[C@H]2C[C@H]3[C@@H]4CCC5CC(=O)C=C[C@]5(C)[C@H]4CC[C@]3(C)[C@H]2[C@@H]1C
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?