[H]OC1=C(C(=O)[C@@]([H])(C([H])([H])[H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H])C(=O)N(C([H])([H])[H])[C@@]11OC2=C([H])C(O[H])=C(C3=C2[C@]([H])(O[C@]([H])(C([H])([H])[H])[C@@]3([H])C([H])([H])[H])[C@@]1([H])C([H])([H])[H])C([H])([H])[H]