Bisacrylic acid oxybis[dimethylsilylene(3,1-propanediyl)] ester

(1,1,3,3-tetramethyldisiloxane-1,3-diyl)dipropane-1,3-diyl diacrylate

Bispropenoic acid (1,1,3,3-tetramethylpropanedisiloxane-1,3-diyl)bis(propane-3,1-diyl) ester