This chemical is called 2-(2-Diethoxyphosphorylethyl)isoindole-1,3-dione, and its systematic name is diethyl [2-(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)ethyl]phosphonate. With the molecular formula of C₁₄H₁₈NO₅P, its molecular weight is 311.2702. The CAS registry number of this chemical is 62514-90-3.

Other characteristics of the 2-(2-Diethoxyphosphorylethyl)isoindole-1,3-dione can be summarised as followings: (1)ACD/LogP: 1.93; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 6; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 7; (6)Polar Surface Area: 82.72 Å²; (7)Index of Refraction: 1.536; (8)Molar Refractivity: 75.86 cm³; (9)Molar Volume: 243 cm³; (10)Polarizability: 30.07×10^-24cm³; (11)Surface Tension: 48.5 dyne/cm; (12)Density: 1.28 g/cm³; (13)Flash Point: 221.6 °C; (14)Enthalpy of Vaporization: 70.03 kJ/mol; (15)Boiling Point: 442.7 °C at 760 mmHg; (16)Vapour Pressure: 4.9E-08 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: O=P(OCC)(OCC)CCN2C(=O)c1ccccc1C2=O
2.InChI: InChI=1/C14H18NO5P/c1-3-19-21(18,20-4-2)10-9-15-13(16)11-7-5-6-8-12(11)14(15)17/h5-8H,3-4,9-10H2,1-2H3
3.InChIKey: IQYFOIPYVGDPHE-UHFFFAOYAH