5-(6-hydroxy-4-oxo-2-thioxo-1,2,3,4-tetrahydroxy-5-pyrimidinyl)-2,4-pentadienylidene-2-thioxodihydro-4,6(1H,5H)-pyrimidinedione
5-(6-hydroxy-4-oxo-2-thioxo-1,2,3,4-tetrahydroxy-5-pyrimidinyl)-2,4-pentadienylidene-2-thioxodihydro-4,6(1h,5h)-pyrimidinedione