– O(C(C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C(/[H])=C(/[H])C([H])([H])/C(/[H])=C(/[H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H])=O)C([H])(C([H])([H])OC(C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C(/[H])=C(/[H])C([H])([H])/C(/[H])=C(/[H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H])=O)C([H])([H])OC(C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C(/[H])=C(/[H])C([H])([H])/C(/[H])=C(/[H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H])=O