CCC[C@@H]1CC2=CC(=O)CC[C@]2(C)[C@@H]2CC[C@@]3(C)[C@H](CC[C@]3(O)CCC(=O)[O-])[C@H]12.[K+]
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?