What is the structure of the compound in the following 1H-NMR spectrum with the molecular formula C9H12O? Relative integration is shown. 
Definitions:
Society's Optimal Amount
The level of production or consumption of a good that maximizes the overall welfare of society, considering both benefits and costs.
Marginal Benefit
The supplementary enjoyment or advantage derived from consuming an extra unit of a good or service.
Marginal Cost
The amount of money needed to manufacture an extra unit of a good or service.
Diagram
A simplified drawing or plan that represents the essential features of something, often used for explanation or clarification.
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