This chemical is called Ethyl (pentafluorobenzoyl)acetate, and its CAS registry number is 3516-87-8. With the molecular formula of C₁₁H₇F₅O₃, its product categories are Fluorobenzene; Benzenes; C10 to C11; Carbonyl Compounds; Esters. In addition, this chemical should be sealed in the cool and dry place, away from oxides.  

Other characteristics of the Ethyl (pentafluorobenzoyl)acetate can be summarised as followings: (1)ACD/LogP: 1.31; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.31; (4)ACD/LogD (pH 7.4): 1.31; (5)ACD/BCF (pH 5.5): 5.87; (6)ACD/BCF (pH 7.4): 5.87; (7)ACD/KOC (pH 5.5): 123.54; (8)ACD/KOC (pH 7.4): 123.48; (9)#H bond acceptors: 3; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 43.37 Å²; (13)Index of Refraction: 1.445; (14)Molar Refractivity: 51.92 cm³; (15)Molar Volume: 195 cm³; (16)Polarizability: 20.58×10^-24cm³; (17)Surface Tension: 34.3 dyne/cm; (18)Density: 1.446 g/cm³; (19)Flash Point: 118.1 °C; (20)Enthalpy of Vaporization: 51.64 kJ/mol; (21)Boiling Point: 277.8 °C at 760 mmHg; (22)Vapour Pressure: 0.00442 mmHg at 25°C.

Uses of this chemical: The 6,7,8,9-tetrafluoro-3-(2,3,4,5,6-pentafluoro-phenyl)-pyrano[4,3-b]chromene-1,10-dione could be obtained by the reactant of Ethyl (pentafluorobenzoyl)acetate. This reaction needs to be taken for 50 minutes with the heating . The yield is 37%.

When you are using this chemical, please be cautious about it as the following: This chemical is irritating / harmful to eyes, respiratory system and skin. You should wear suitable protective clothing if you use it. In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure: 
1.SMILES: Fc1c(c(F)c(F)c(F)c1F)C(=O)CC(=O)OCC
2.InChI: InChI=1/C11H7F5O3/c1-2-19-5(18)3-4(17)6-7(12)9(14)11(16)10(15)8(6)13/h2-3H2,1H3
3.InChIKey: SFYYMUUQGSQVFT-UHFFFAOYAF