Molecular structure of Dibenzyl dicarbonate (CAS NO.31139-36-3) is:

Product Name: Dibenzyl dicarbonate
CAS Registry Number: 31139-36-3
Systematic Name: Dibenzyl dicarbonate
Molecular Formula: C₁₆H₁₄O₅
Molecular Weight: 286.28
Melting Point: 29-32 °C(lit.)
storage temp.: -20 °C
Index of Refraction: 1.566
Molar Refractivity: 74.85 cm³ 
Molar Volume: 229.2 cm³ 
Surface Tension: 48.3 dyne/cm 
Density: 1.248 g/cm³ 
Flash Point: 189.5 °C 
Enthalpy of Vaporization: 68.14 kJ/mol 
Boiling Point: 426.6 °C at 760 mmHg 
Vapour Pressure: 1.75E-07 mmHg at 25 °C 
Product Categories: Biochemistry;Peptide Synthesis;Protection & Derivatization Reagents (for Synthesis);Protective Reagents (Peptide Synthesis);Synthetic Organic Chemistry
SMILES: O=C(OCc1ccccc1)OC(=O)OCc2ccccc2 
InChI: InChI=1/C16H14O5/c17-15(19-11-13-7-3-1-4-8-13)21-16(18)20-12-14-9-5-2-6-10-14/h1-10H,11-12H2
InChIKey: FHRRJZZGSJXPRQ-UHFFFAOYAE

Safty information about Dibenzyl dicarbonate (CAS NO.31139-36-3) is:
Hazard Codes: Xi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
WGK Germany: 3
F: 4.4-10-21

 Dibenzyl dicarbonate , its cas register number is 31139-36-3. It also can be called Pyrocarbonic acid dibenzyl ester ; Dicarbonic acid,C,C'-bis(phenylmethyl) ester .