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: Encapsulation of Nod1 and Nod2 receptor ligands into poly(lactic acid) nanoparticles potentiates their immune properties.
Example Output: poly(lactic acid)

Example Input: Inhibition of EGF/EGFR activation with naphtho[1,2-b]furan-4,5-dione blocks migration and invasion of MDA-MB-231 cells.
Example Output: naphtho[1,2-b]furan-4,5-dione

Example Input: Ellagic acid attenuates bleomycin and cyclophosphamide-induced pulmonary toxicity in Wistar rats.
Example Output:
bleomycin