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: Anti-inflammatory trends of 1, 3-diphenyl-2-propen-1-one derivatives.
Example Output: 1, 3-diphenyl-2-propen-1-one

Example Input: Tethered dimers as NAD synthetase inhibitors with antibacterial activity.
Example Output: NAD

Example Input: CCAAT/Enhancer-binding protein-homologous protein sensitizes to SU5416 by modulating p21 and PI3K/Akt signal pathway in FRO anaplastic thyroid carcinoma cells.
Example Output:
SU5416