[H]OC1=C([H])C2=C(C3=C([H])C(OC([H])([H])[H])=C([H])C(O[H])=C3C(=O)O2)C(=C1O[H])C1=C2C(OC(=O)C3=C(O[H])C([H])=C(OC([H])([H])[H])C([H])=C23)=C([H])C(O[H])=C1O[H]