This chemical is called 3-(2,4-Cyclopentadien-1-ylidene)pregn-4-en-20-one, and its CAS registry number is 6952-10-9. With the molecular formula of C₂₆H₃₄O, its molecular weight is 362.55. 

Other characteristics of the 3-(2,4-Cyclopentadien-1-ylidene)pregn-4-en-20-one can be summarised as followings: (1)ACD/LogP: 7.19; (2)# of Rule of 5 Violations: 1; (3)#H bond acceptors: 1; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 1; (6)Polar Surface Area: 17.07 Å²; (7)Index of Refraction: 1.58; (8)Molar Refractivity: 111.22 cm³; (9)Molar Volume: 333.8 cm³; (10)Polarizability: 44.09×10^-24cm³; (11)Surface Tension: 42.6 dyne/cm; (12)Density: 1.08 g/cm³; (13)Flash Point: 212.9 °C; (14)Enthalpy of Vaporization: 76.35 kJ/mol; (15)Boiling Point: 495.9 °C at 760 mmHg; (16)Vapour Pressure: 5.69E-10 mmHg at 25°C.

You can still convert the following datas into molecular structure: 
1.SMILES: O=C([C@H]1CC[C@H]2[C@H]5[C@H](CC[C@]12C)[C@@]4(/C(=C\C(=C3\C=C/C=C3)CC4)CC5)C)C
2.InChI: InChI=1/C26H34O/c1-17(27)22-10-11-23-21-9-8-20-16-19(18-6-4-5-7-18)12-14-25(20,2)24(21)13-15-26(22,23)3/h4-7,16,21-24H,8-15H2,1-3H3/t21-,22+,23-,24-,25-,26+/m0/s1
3.InChIKey: GNDKEWBKRBOJSG-FBQZJRKBBQ