[H]C([H])=C([H])C(C1=C(C2=C([H])C([H])=C([H])C([H])=C2N1[H])C1=C(OC([H])([H])[H])C(=O)C(C2=C([H])N([H])C3=C(C([H])=C([H])C([H])=C23)C([H])([H])C([H])=C(C([H])([H])[H])C([H])([H])[H])=C(OC([H])([H])[H])C1=O)(C([H])([H])[H])C([H])([H])[H]