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]: Investigation of astatine(III) hydrolyzed species: experiments and relativistic calculations.
[A]: astatine(III)

[Q]: Development of hypoxia-inducible factor (HIF)-1 inhibitors: effect of ortho-carborane substituents on HIF transcriptional activity under hypoxia.
[A]: ortho-carborane

[Q]: Trichostatin A inhibits transforming growth factor--induced reactive oxygen species accumulation and myofibroblast differentiation via enhanced NF-E2-related factor 2-antioxidant response element signaling.
[A]:
oxygen