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.

Input: Consider Input: The presence of D-fagomine in the human diet from buckwheat-based foodstuffs.

Output: D-fagomine

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

Output: mTOR

Input: Consider Input: The inhibitory effect of the leukotriene receptor antagonist on leukotriene D4-induced MUC2/5AC gene expression and mucin secretion in human airway epithelial cells.
Output: leukotriene