Molecular structure of Pentaerythritol tetraacrylate (CAS NO.4986-89-4) is:

Product Name: Pentaerythritol tetraacrylate
CAS Registry Number: 4986-89-4
IUPAC Name: [3-Prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propyl] prop-2-enoate
Molecular Weight: 352.3359 [g/mol]  
Molecular Formula: C₁₇H₂₀O₈  
XLogP3-AA: 2.3  
H-Bond Donor: 0  
H-Bond Acceptor: 8
EINECS: 225-644-1
Melting Point: 18°C
Refractive index: n20/D 1.487(lit.)
Index of Refraction: 1.483 
Molar Refractivity: 86.77 cm³ 
Molar Volume: 303.5 cm³
Surface Tension: 39 dyne/cm 
Density: 1.16 g/cm³ 
Flash Point: 196 °C 
Enthalpy of Vaporization: 70.92 kJ/mol 
Boiling Point: 450.3 °C at 760 mmHg 
Vapour Pressure: 2.66E-08 mmHg at 25°C 
Other Registry Number: 113674-04-7 ;124538-16-5 ;150315-46-1 ;152992-37-5 ;154303-16-9 ;255831-13-1
;93218-05-4
Product Categories: Functional Monomer;Acrylic Monomers;C₁₂ to C₆₃Monomers;Carbonyl Compounds;Esters;Polyfunctional Acrylics
Canonical SMILES: C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C
InChI: InChI=1S/C17H20O8/c1-5-13(18)22-9-17(10-23-14(19)6-2,11-24-15(20)7-3)12-25-16(21)8-4/h5-8H,1-4,9-12H2 
InChIKey: KNSXNCFKSZZHEA-UHFFFAOYSA-N

Safty information about Pentaerythritol tetraacrylate (CAS NO.4986-89-4) is:
Hazard Codes: Xi
Risk Statements: 36/38-43 
R36/38:Irritating to eyes and skin. 
R43:May cause sensitization by skin contact.
Safety Statements: 26-39 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S39:Wear eye / face protection.
WGK Germany: 1

 Pentaerythritol tetraacrylate , its cas register number is 4986-89-4. It also can be called 2,2-Bis(((1-oxoallyl)oxy)methyl)-1,3-propanediyl diacrylate ; 2-Propenoic acid, 1,1'-(2,2-bis(((1-oxo-2-propen-1-yl)oxy)methyl)-1,3-propanediyl) ester ; 2-Propenoic acid, 2,2-bis(((1-oxo-2-propenyl)oxy)methyl)-1,3-propanediyl ester .