The compound shown is treated with chloroform and aqueous sodium hydroxide at 340 K, and the mixture is then acidified. Which structure is the major product?

The compound is 4-methylphenol (p-cresol). In the Reimer-Tiemann reaction dichlorocarbene attacks the phenoxide ring at an ortho position, since para is blocked by the methyl group. After hydrolysis the product is 2-hydroxy-5-methylbenzaldehyde. The acid is the Kolbe-Schmitt type product, and the formyl group is not meta to the hydroxyl.