confused about the H groups on the left of the molecule. The book says there are 9 H NMR groups. I thought those two would count as 1 bc they are in the same position and identical. Can someone explain why they arent equivalent

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NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.