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]: Histamine enhances the depolarizing afterpotential of immunohistochemically identified vasopressin neurons in the rat supraoptic nucleus via H1-receptor activation.
[A]: vasopressin


[Q]: Tricycloalternarenes F-H: three new mixed terpenoids produced by an endolichenic fungus Ulocladium sp. using OSMAC method.
[A]: terpenoids


[Q]: Oxysterol generation and liver X receptor-dependent reverse cholesterol transport: not all roads lead to Rome.
[A]:
cholesterol