Here's why:
* Two Independent Clauses: It contains two independent clauses:
* "Your mother told us to clean the kitchen" (can stand alone as a complete thought)
* "We forgot" (can stand alone as a complete thought)
* Coordinating Conjunction: The clauses are joined by the coordinating conjunction "but", which indicates a contrast between the two actions.
Let me know if you have any other sentences you'd like to analyze!