[H]O[C@@]1(O[C@@]2([H])\C(=C([H])\C([H])([H])[C@]3([H])C(=C([H])C(=O)O[C@@]3(C([H])([H])[H])C([H])([H])C([H])([H])\C(=C3\OC(=O)[C@@]1([H])[C@]23[H])C([H])([H])[H])C([H])(C([H])([H])[H])C([H])([H])[H])C([H])([H])[H])C([H])([H])[H]