Which of the following compounds is an amide? 
Definitions:
Operating Cost
Expenses associated with the ongoing operations of a business, such as rent, utilities, and payroll.
Useful Life
The expected period during which an asset is deemed to be functional and economically viable for its intended purpose, important for depreciation calculations.
Kilometres Per Litre
A measure of fuel efficiency in vehicles, indicating how many kilometers a vehicle can travel on one litre of fuel.
Supply Chain Metrics
Quantitative measures used to assess the performance and efficiency of supply chain operations, including aspects like delivery times, costs, and inventory levels.
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