[H]OC1=C([H])C([H])=C2C(=C1C([H])(C([H])([H])[H])C([H])([H])[H])C([H])([H])C([H])([H])[C@]1([H])[C@]2(C([H])([H])[H])C([H])([H])C([H])([H])C([H])([H])C1(C([H])([H])[H])C([H])([H])[H]