Tetramethylol acetylene diurea

tetramethylol acetyl ; tetramethylol acetylenediurea ; 1,3,4,6-tetrakis-hydroxymethyl-tetrahydro-imidazo(4,5-d)imidazole-2,5-dione ; tetrakis (hydroxy methy1) glycoluril ; 1,3,4,6-tetramethylol-3a,6a-dihydroimidazo[4,5-d]imidazole-2,5-quinone ; tetramethylol acetylene diuriene ; 1,3,4,6-tetrakis(hydroxymethyl)octahydroimidazo[4,5-d]imidazole-2,5-dione ; tetrahydro-1,3,4,6-tetrakis(hydroxymethyl)imidazo[4,5-d]imidazol-2,5(1h,3h)-dion ; 1,3,4,6-tetrakis(hydroxymethyl)tetrahydroimidazo[4,5-d]imidazole-2,5(1h,3h)-dione ; 1,3,4,6-tetrakis(hydroxymethyl)-3a,6a-dihydroimidazo[4,5-d]imidazole-2,5-dione