Which functional group is present in the structure of heroin shown below? 
Definitions:
Commercial Use
The utilization of something with the primary goal of generating profit or meeting the needs of commerce.
Agricultural Use
The application or practice of cultivating land and breeding animals and plants to provide food, fiber, medicinal plants, and other products to sustain and enhance human life.
Standing-Water Ecosystem
A lake or pond ecosystem.
Lake
A large body of water surrounded by land, not directly connected to the sea, which can be freshwater or saltwater.
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