Tatutomeric, 1H spectra

Including the structure below, the following molecule can exist in three tautomeric forms. a) Sketch the two additional tautomeric forms of this molecule. b) Draw the 1H spectra of all three tautomeric forms. [90\% of marks] Including the structure below, the following molecule can exist in three tautomeric forms. a) Sketch the two additional tautomeric forms of this molecule. b) Draw the 1H spectra of all three tautomeric forms. [90\% of marks]