CC1(C)[C@@H](O)CC[C@]2(C)C3C(O)C=C4[C@H]5C[C@@](C)(C(=O)O)CC[C@]5(C)CC[C@]4(C)[C@]3(C)CC[C@@H]12
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?