The Arsenous acid, triethylester, with CAS registry number 3141-12-6, has the systematic name of triethyl arsenite. Besides this, it is also called Arsenic triethoxide. And the chemical formula of this chemical is C₆H₁₅AsO₃. What's more, its EINECS is 221-543-1.

Physical properties of Arsenous acid, triethylester: (1)#H bond acceptors: 3; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 6; (4)Polar Surface Area: 27.69 Å²; (5)Flash Point: 49.4 °C; (6)Enthalpy of Vaporization: 38.55 kJ/mol; (7)Boiling Point: 165.5 °C at 760 mmHg; (8)Vapour Pressure: 2.46 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following:
The Arsenous acid, triethylester is toxic by inhalation and if swallowed. When usingit , do not eat, drink or smoking. After contact with skin, wash immediately with plenty of soap-suds. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) Secondly, this chemical is very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment, so avoid release it to the environment. Refer to special instructions / safety data sheets. This material and its container must be disposed of as hazardous waste.

You can still convert the following datas into molecular structure:
(1)SMILES: O([As](OCC)OCC)CC
(2)InChI: InChI=1/C6H15AsO3/c1-4-8-7(9-5-2)10-6-3/h4-6H2,1-3H3
(3)InChIKey: BUZKVHDUZDJKHI-UHFFFAOYAY
(4)Std. InChI: InChI=1S/C6H15AsO3/c1-4-8-7(9-5-2)10-6-3/h4-6H2,1-3H3
(5)Std. InChIKey: BUZKVHDUZDJKHI-UHFFFAOYSA-N

The toxicity data is as follows: