In the aromatic compound resonance form shown below,which heteroatoms are contributing lone pairs towards aromaticity? 
Definitions:
Fast Food Industry
A sector of the food service industry that specializes in quick service, standardized food products, and minimal table service.
Perfect Competitor
An idealized market structure where many firms sell identical products, and there are no barriers to entering or exiting the market.
Total Profit
The overall financial gain made by a business after subtracting all expenses from the total revenue generated.
Herfindahl-Hirschman Index
A measure used to assess the level of market concentration and competition within an industry, calculated by squaring the market share of each firm competing in the market and then summing the resulting numbers.
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