What is the relationship between the following two molecules?

Name: What is the relationship between the following two molecules?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The two molecules are diastereomers because they are stereoisomers that are not enantiomers (mirror images) or identical. Diastereomers have at least one stereocenter that is different between the two molecules, which is the case for these two molecules. Constitutional isomers have different connectivity of atoms and these two molecules have the same connectivity.

What Is the Relationship Between the Following Two Molecules