1,7-bis(iodomethyl)-1,1,3,3,5,5,7,7-octamethyltetrasiloxane InChI=1/C10H28I2O3Si4/c1-16(2,9-11)13-18(5,6)15-19(7,8)14-17(3,4)10-12/h9-10H2,1-8H TETRASILOXANE,1,7-BIS-(JODOMETHYL),OCTAMETHYL tetrasiloxane, 1,7-bis(iodomethyl)-1,1,3,3,5,5,7,7-octamethyl-