The 2',4',5',7'-Tetrabromo-3,4,5,6-tetrachlorofluorescein, with the CAS registry number 13473-26-2, is also known as D& C Red No.27. It belongs to the product category of Organics. Its EINECS number is 236-747-6. This chemical's molecular formula is C₂₀H₄Br₄Cl₄O₅ and molecular weight is 785.67. What's more, its systematic name is 2',4',5',7'-Tetrabromo-4,5,6,7-tetrachloro-3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one. You should not breathe dust. When using it, you must avoid contact with skin and eyes. 

Physical properties of 2',4',5',7'-Tetrabromo-3,4,5,6-tetrachlorofluorescein are: (1)ACD/LogP: 10.297; (2)# of Rule of 5 Violations: 2; (3)ACD/LogD (pH 5.5): 10.28; (4)ACD/LogD (pH 7.4): 9.42; (5)ACD/BCF (pH 5.5): 1000000.00; (6)ACD/BCF (pH 7.4): 1000000.00; (7)ACD/KOC (pH 5.5): 9049349.00; (8)ACD/KOC (pH 7.4): 1256304.00; (9)#H bond acceptors: 5; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 75.99 Å²; (13)Index of Refraction: 1.881; (14)Molar Refractivity: 138.19 cm³; (15)Molar Volume: 301.547 cm³; (16)Polarizability: 54.783×10^-24cm³; (17)Surface Tension: 117.32 dyne/cm; (18)Density: 2.605 g/cm³; (19)Flash Point: 412.826 °C; (20)Enthalpy of Vaporization: 114.452 kJ/mol; (21)Boiling Point: 758.995 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: Brc5cc4c(Oc1c(cc(Br)c(O)c1Br)C43OC(=O)c2c3c(Cl)c(Cl)c(Cl)c2Cl)c(Br)c5O
(2)Std. InChI: InChI=1S/C20H4Br4Cl4O5/c21-5-1-3-17(9(23)15(5)29)32-18-4(2-6(22)16(30)10(18)24)20(3)8-7(19(31)33-20)11(25)13(27)14(28)12(8)26/h1-2,29-30H
(3)Std. InChIKey: ZYIBVBKZZZDFOY-UHFFFAOYSA-N