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.
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Question: Stimulation of N-methyl-D-aspartate receptors modulates Jurkat T cell growth and adhesion to fibronectin.

Answer: N-methyl-D-aspartate


Question: Effect of cyproheptadine on serum leptin levels.

Answer: cyproheptadine


Question: DNA damage and homologous recombination signaling induced by thymidylate deprivation.

Answer:
thymidylate