sentence2_structure: An amine<>is<>an organic compound that can be considered to be a derivative of ammonia$$$an organic compound<>to be<>a derivative of ammonia
sentence1: Amines are compounds that are derivatives of the base ammonia, NH 3 .
sentence2: An amine is an organic compound that can be considered to be a derivative of ammonia.
question: An amine is an organic compound that can be considered to be a derivative of what?