Synonyms: 2-Propenoicacid, 2-methyl-,3-[[(heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxanyl)oxy]dimethylsilyl]propylester (9CI);1-[3-(Methacryl)propyldimethylsiloxy]-3,5,7,9,11,13,15-heptacyclopentylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane