CC(C)/C(O)=C1/C(=O)OC(c2ccoc2)[C@@]2(C)C(O)C(O)[C@]34OC5(C)OC67CC(C)(C(CC(=O)O)[C@@]63C)C(O)[C@@]7(O)C(O)[C@@]4(O5)C12
The electronegative atoms usually involved in hydrogen bonding are oxygen, nitrogen and fluorine. How many hydrogen bond acceptors does the molecule contain?