You will be presented a sentence from biomedical research text. Extract all terms that correspond to chemical entities of biological interest (ChEBI).
Return your identified terms in a JSON array, formatted like this: ["Entity1", "Entity2", ...].
If no such entities are detected, respond by providing an empty JSON array [].

Biomedical context:
Scalebars:50mumfor(A-F),(H-J);250mumfor(K)and(O);100mumfor(G),(L-N),(P-R);20mumfor(Q').
[]