[H]N1C([H])=C(C(=O)C2=C(OC([H])([H])[H])C([H])=C(OC([H])([H])[H])C([H])=C2C(=O)OC([H])([H])[H])C(=O)C(OC([H])([H])[H])=C1\C([H])=C(/[H])C([H])([H])[H]