Trimethylolacetylenediureine; Imidazo(4,5-d)imidazole-2,5(1H,3H)-dione, tetrahydro-1,3,4-tris(hydroxymethyl)-; Tetrahydro-1,3,4-tris(hydroxymethyl)imidazo(4,5-d)imidazole-2,5(1H,3H)-dione; 1,3,4-tris(hydroxymethyl)tetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione
