A trisubstituted compound 'A' with molecular formula C10H12O2 gives neutral FeCl3 test positive. Treatment of compound 'A' with NaOH and CH3Br gives C11H14O2, with HI and with hot conc. NaOH gives compound 'B' with molecular formula C10H12O2. Compound 'A' also decolourises alkaline KMnO4.
Give the structure of compound 'A'