Learn Swedish: Lakritsen är ju antagligen inte lika seg som kolan i godisbutiken. - The licorice is probably not as chewy as the toffee in the candy shop, of course.

When multiple sentence adverbs cluster together in the midfield, they follow a general hierarchy. 'Lighter' attitude or consensus words like ju go first. Next come adverbs of probability or time, like antagligen. Negations like inte usually come last in the group. Think of it as: Attitude -> Probability -> Negation.

Why is 'of course' translated as ju instead of förstås, and why isn't it at the end of the sentence?

Ju is a modal particle signaling shared knowledge ('as we both know' or 'as you can see'). Unlike 'of course' in English, which can float to the end of a sentence, ju is strictly a sentence adverb. In a main clause, it must sit right after the finite verb (here, är). While förstås also means 'of course', ju feels more conversationally integrated and binds the speaker and listener together.

Could I swap antagligen and inte if I wanted to?

In a main clause like this, antagligen must come before inte. The adverb that comes first modifies the one that follows. Placing antagligen before inte correctly means 'it is probable that it is not...'. If you tried to say inte antagligen, it would sound unnatural; to express 'it is not probable', you would use a different structure entirely, like det är inte troligt.