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: The increased number of Leydig cells by di(2-ethylhexyl) phthalate comes from the differentiation of stem cells into Leydig cell lineage in the adult rat testis.

A: di(2-ethylhexyl) phthalate
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Q: The (R)-omeprazole hydroxylation index reflects CYP2C19 activity in healthy Japanese volunteers.

A: (R)-omeprazole
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Q: Anti-inflammatory trends of 1, 3-diphenyl-2-propen-1-one derivatives.

A:
1, 3-diphenyl-2-propen-1-one
****