This chemical is called Acenaphthylene, dodecahydro-, and its CAS registry number is 2146-36-3. With the molecular formula of C₁₂H₂₀, its molecular weight is 164.29.

Other characteristics of the Acenaphthylene, dodecahydro- can be summarised as followings: (1)ACD/LogP: 5.35; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.35; (4)ACD/LogD (pH 7.4): 5.35; (5)ACD/BCF (pH 5.5): 6861.51; (6)ACD/BCF (pH 7.4): 6861.51; (7)ACD/KOC (pH 5.5): 19395.46; (8)ACD/KOC (pH 7.4): 19395.46; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Index of Refraction: 1.499; (13)Molar Refractivity: 51.44 cm³; (14)Molar Volume: 174.9 cm³; (15)Polarizability: 20.39×10^-24cm³; (16)Surface Tension: 32.5 dyne/cm; (17)Density: 0.939 g/cm³; (18)Flash Point: 78.7 °C; (19)Enthalpy of Vaporization: 45 kJ/mol; (20)Boiling Point: 232.4 °C at 760 mmHg; (21)Vapour Pressure: 0.0899 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: C12CCC3CCCC(CCC1)C23
2.InChI: InChI=1/C12H20/c1-3-9-4-2-6-11-8-7-10(5-1)12(9)11/h9-12H,1-8H2
3.InChIKey: FZDZWLDRELLWNN-UHFFFAOYAU