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.

[EX Q]: The Intermediate-conductance Calcium-activated Potassium Channel KCa3.1 Regulates Vascular Smooth Muscle Cell Proliferation via Controlling Calcium-dependent Signaling.
[EX A]: Potassium

[EX Q]: Multifunctional targets of dietary polyphenols in disease: a case for the chemokine network and energy metabolism.
[EX A]: polyphenols

[EX Q]: Environmental pesticide exposure modulates cytokines, arginase and ornithine decarboxylase expression in human placenta.
[EX A]:
ornithine