This chemical is called Dibenzo(b,e)(1,4)dioxin, 1,2,4,7-tetrachloro-, and it can also be named as  1,2,4,7-Tetrachlorodibenzo-p-dioxin. With the molecular formula of C₁₂H₄Cl₄O₂, its molecular weight is 321.97. The CAS registry number of this chemical is 71669-28-8.

(1)ACD/LogP: 6.63; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 6.63; (4)ACD/LogD (pH 7.4): 6.63; (5)ACD/BCF (pH 5.5): 64798.07; (6)ACD/BCF (pH 7.4): 64798.07; (7)ACD/KOC (pH 5.5): 96760.21; (8)ACD/KOC (pH 7.4): 96760.21; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 18.46 Å²; (13)Index of Refraction: 1.655; (14)Molar Refractivity: 71.97 cm³; (15)Molar Volume: 195.9 cm³; (16)Polarizability: 28.53×10^-24cm³; (17)Surface Tension: 57.4 dyne/cm; (18)Density: 1.643 g/cm³; (19)Flash Point: 161.2 °C; (20)Enthalpy of Vaporization: 63.87 kJ/mol; (21)Boiling Point: 412 °C at 760 mmHg; (22)Vapour Pressure: 1.28E-06 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: Clc2cc1Oc3c(Cl)cc(Cl)c(Cl)c3Oc1cc2
2.InChI: InChI=1/C12H4Cl4O2/c13-5-1-2-8-9(3-5)18-11-7(15)4-6(14)10(16)12(11)17-8/h1-4H
3.InChIKey: SMPHQCMJQUBTFZ-UHFFFAOYAS