The C-NMR and DEPT spectra for a compound with the molecular formula of C,H140 are provided below. Propose a structure for the compound. Assign the chemical shifts in the table to individual carbons in the structure. C-NMR DEPT Pattern Signals (ppm) 45 90 135 18 up up 28 down down 46 up 75 up 170 up up up

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.