In this task, you are given a sentence. You are expected to recognize the name of any form of chemical substances. Although there might be several correct answers, you need to write one of them.
--------
Question: Synthesis and biological evaluation of novel pyrrolidine-2,5-dione derivatives as potential antidepressant agents. Part 1.

Answer: pyrrolidine-2,5-dione


Question: Penicillin-binding proteins and role of amdinocillin in causing bacterial cell death.

Answer: amdinocillin


Question: Aspirin and salicylate bind to immunoglobulin heavy chain binding protein (BiP) and inhibit its ATPase activity in human fibroblasts.

Answer:
salicylate