[H]ON1C(=O)\C(=C(\[H])C([H])(C([H])([H])[H])C([H])([H])[H])[C@]([H])(C1=O)C1=C([H])C([H])=C(OC([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H])C([H])=C1[H]