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.

Example Input: Aspirin inhibits mTOR signaling, activates AMP-activated protein kinase, and induces autophagy in colorectal cancer cells.
Example Output: mTOR

Example Input: Fragment-based design, synthesis, and biological evaluation of N-substituted-5-(4-isopropylthiophenol)-2-hydroxynicotinamide derivatives as novel Mcl-1 inhibitors.
Example Output: N-substituted-5-(4-isopropylthiophenol)-2-hydroxynicotinamide

Example Input: Drug-protein interactions: isolation and characterization of covalent adducts of phenoxybenzamine and calmodulin.
Example Output:
phenoxybenzamine