How many resonance contributors (including the structure given; count the two Kekule structures of a benzene ring as two) can be drawn for the species shown below ?

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Benzylic carbanion : the original structure has 2 Kekule forms (2). The charge then moves to the ortho (C-4 and C-7a) and para (C-6) carbons (3 structures) and from C-7a into the C=O to give the enolate O⁻ (1). Total = 2 + 3 + 1 = 6.

Total = 6.

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