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.

[Q]: Effect of amrinone on tumor necrosis factor production in endotoxic shock.
[A]: amrinone


[Q]: 4-Hydroxypyridazin-3(2H)-one Derivatives as Novel d-Amino Acid Oxidase Inhibitors.
[A]: d-Amino Acid


[Q]: The preventive effect of uncarboxylated osteocalcin against free fatty acid-induced endothelial apoptosis through the activation of phosphatidylinositol 3-kinase/Akt signaling pathway: Uncarboxylated osteocalcin and endothelial apoptosis.
[A]:
phosphatidylinositol