Vanillic Acid Contains 57 14 C 4 80 H And 38 06 O And Has A Molar Mass Of About

Vanillic acid contains 57.14% C , 4.80% H ,and 38.06% O and has a molar mass of about 168 g .

What is the molecular formula of vanillic acid?

Express your answer as a chemical formula. 

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