The systematic name of Octavinyloctasilasesquioxane is 1,3,5,7,9,11,13,15-Octaethenylpentacyclo[9.5.1.13,9.15,15.17,13]octasiloxane. With the CAS registry number 69655-76-1, it is also named as Octa(vinylsilasesquioxane). The product's categories are silane reagents, organic silicon-oxygen polymer. In addition, its molecular formula is C₁₆H₂₄O₁₂Si₈ and its molecular weight is 633.04. 

The other characteristics of Octavinyloctasilasesquioxane can be summarized as: (1)H-Bond Donor: 0; (2)H-Bond Acceptor: 12; (3)Rotatable Bond Count: 8; (4)Exact Mass: 631.942188; (5)MonoIsotopic Mass: 631.942188; (6)Topological Polar Surface Area: 111; (7)Heavy Atom Count: 36; (8)Complexity: 745; (9)Freely Rotating Bonds: 8; (10)Index of Refraction: 1.511; (11)Molar Refractivity: 155.02 cm³; (12)Molar Volume: 516.7 cm³; (13)Polarizability: 61.45×10^-24cm³; (14)Surface Tension: 25.5 dyne/cm; (15)Density: 1.22 g/cm³; (16)Flash Point: 148.4 °C; (17)Melting point: >350 °C; (18)Enthalpy of Vaporization: 54.92 kJ/mol; (19)Boiling Point: 329.4 °C at 760 mmHg; (20)Vapour Pressure: 0.000341 mmHg at 25 °C.

When you are using this chemical, please be cautious about it as the following: Octavinyloctasilasesquioxane is irritating to eyes, respiratory system and skin. Please wear suitable gloves and eye/face protection. Moreover, please avoid contact with skin and eyes. And please do not breathe dust. Besides, in case of contact with eyes, please rinse immediately with plenty of water and seek medical advice.

People can use the following data to convert to the molecule structure.
(1)SMILES:O1[Si]5(O[Si]3(O[Si]4(O[Si](O[Si]2(O[Si](O[Si](O[Si]1(O2)\C=C)(O3)\C=C)(O4)\C=C)\C=C)(O5)\C=C)\C=C)\C=C)\C=C
(2)InChI:InChI=1/C16H24O12Si8/c1-9-29-17-30(10-2)20-33(13-5)22-31(11-3,18-29)24-35(15-7)25-32(12-4,19-29)23-34(14-6,21-30)27-36(16-8,26-33)28-35/h9-16H,1-8H2
(3)InChIKey:ZWCNRMDCQDJIRL-UHFFFAOYAR
(4)Std. InChI:InChI=1S/C16H24O12Si8/c1-9-29-17-30(10-2)20-33(13-5)22-31(11-3,18-29)24-35(15-7)25-32(12-4,19-29)23-34(14-6,21-30)27-36(16-8,26-33)28-35/h9-16H,1-8H2
(5)Std. InChIKey:ZWCNRMDCQDJIRL-UHFFFAOYSA-N