label: 5-((2E,4E)-5-(HEXAHYDRO-2,4,6-TRIOXO-5-PYRIMIDINYL)-2,4-PENTADIEN-1-YLIDENE)-2,4,6(1H,3H,5H)-PYRIMIDINETRIONE
label_lc: 5-((2e,4e)-5-(hexahydro-2,4,6-trioxo-5-pyrimidinyl)-2,4-pentadien-1-ylidene)-2,4,6(1h,3h,5h)-pyrimidinetrione