The Methanone, (1-ethyl-1H-indol-3-yl)-1-naphthalenyl-, with the CAS registry number 209414-05-1, has the systematic name (1-ethylindol-3-yl)-(1-naphthyl)methanone. Its molecular formula is C₂₁H₁₇NO and its molecular weight is 299.36578.

Other characteristics of the Methanone, (1-ethyl-1H-indol-3-yl)-1-naphthalenyl- can be summarised as followings: (1)ACD/LogP: 5.34; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.335; (4)ACD/LogD (pH 7.4): 5.335; (5)ACD/BCF (pH 5.5): 6678.943; (6)ACD/BCF (pH 7.4): 6678.943; (7)ACD/KOC (pH 5.5): 19024.66; (8)ACD/KOC (pH 7.4): 19024.66; (9)#H bond acceptors: 2; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 22 Å²; (13)Index of Refraction: 1.629; (14)Molar Refractivity: 93.754 cm³; (15)Molar Volume: 263.76 cm³; (16)Polarizability: 37.167×10^-24cm³; (17)Surface Tension: 43.724 dyne/cm; (18)Density: 1.135 g/cm³; (19)Flash Point: 260.238 °C; (20)Enthalpy of Vaporization: 77.664 kJ/mol; (21)Boiling Point: 506.692 °C at 760 mmHg; (22)Vapour Pressure: 0 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: CCn1cc(c2c1cccc2)C(=O)c3cccc4c3cccc4
2.InChI: InChI=1/C21H17NO/c1-2-22-14-19(17-11-5-6-13-20(17)22)21(23)18-12-7-9-15-8-3-4-10-16(15)18/h3-14H,2H2,1H3
3.InChIKey: DFUBISUWTFPBFB-UHFFFAOYAE