41. Answer this question based on both of the following spectra. MS: The molecular ion is at 150 amu. The M 1 peak is 9% as tall as the molecular ion. IR: NMR: The correct structure is . The doublet at about 8.00 ppm is , the doublet at 6.95 ppm is , the singlet at 5.80 ppm is , the quartet at 2.95 ppm is , and the triplet at 1.15 ppm is .