1,3-Propanediol, 2,2'-(oxybis(methylene))bis(2-((nitrooxy)methyl)-,tetranitrate (ester) 13184-80-0 2,2'-(Oxybis(methylene))bis(2-((nitrooxy)methyl)propane-1,3-diyl) tetranitrate Dipentaerythritol, hexanitrate EINECS 236-135-9