<prompt> Yakha inguqulo eyinkimbinkimbi yalesi sigwebo I-monomer ibhekana nokusabela kwe-Diels-Alder nge-dienes.  <response>: Yiqiniso, inguqulo eyinkimbinkimbi yomusho ithi I-monomer ibhekana nezimpendulo ze-Diels-Alder nge-dienes kanye ne-condenses namaqembu e-acidic methylene, isibonelo sama-malonic esters. 