Propose a Structure for Compound X,which Has M⁺ = 120

Essay

Propose a structure for Compound X,which has M⁺ = 120 and (M + 2) = 122 of approximately equal intensity in its mass spectrum and has the following ¹³C NMR spectral data:
Broadband decoupled ¹³C NMR:
32.6,118.8,134.3 δ
DEPT-90:
134.3 δ
DEPT-135:
positive peaks at 134.3 δ;negative peaks at 32.6,118.8 δ