Molecular structure of 5,13-Dihydro-5-oxobenzo(e)(2)benzopyrano(4,3-b)indole (CAS NO.7374-66-5) is:

Product Name: 5,13-Dihydro-5-oxobenzo(e)(2)benzopyrano(4,3-b)indole  
CAS Registry Number: 7374-66-5
Molecular Weight: 285.29614 [g/mol]
Molecular Formula: C₁₉H₁₁NO₂
XLogP3-AA: 4.4
H-Bond Donor: 1
H-Bond Acceptor: 2
Surface Tension: 71 dyne/cm
Density: 1.425 g/cm³
Flash Point: 302.4 °C
Enthalpy of Vaporization: 86.3 kJ/mol
Boiling Point: 576.3 °C at 760 mmHg
Vapour Pressure: 2.77E-13 mmHg at 25°C 
Classification Code: Tumor data

Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits toxic fumes of NO_x.

 5,13-Dihydro-5-oxobenzo(e)(2)benzopyrano(4,3-b)indole , its cas register number is 7374-66-5. It also can be called R 47 ; 5-Oxo-5,13-dihydrobenzo(e)(2)benzopyrano(4,3-b)indole ; 5-Oxo-5H-benzo(e)isochromeno(4,3-b)indole ; BRN 0813903 ; Benzo(e)(2)benzopyrano(4,3-b)indol-5(13H)-one ; Benzo(e)(2)benzopyrano(4,3-b)indol-5-one, 5,13-dihydro- .