In the following synthesis reaction of vanillin 1. Draw all the products and by-products, so that the elemental balance is met. 2. State what the limit reagent is, bearing in mind that methanol is a solvent and dimethyl sulfate subsequently reduces it to vanillin.

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Me i) Оз, МеОн -78 °C H. ii) Me,s но но ÓMe ÓMe isoeugenol vanillin Me i) Оз, МеОн -78 °C H. ii) Me,s но но ÓMe ÓMe isoeugenol vanillin