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.

Input: Consider Input: Ergovaline binding and activation of D2 dopamine receptors in GH4ZR7 cells.

Output: dopamine


Input: Consider Input: A novel mutation of the erythroid-specific gamma-Aminolevulinate synthase gene in a patient with non-inherited pyridoxine-responsive sideroblastic anemia.

Output: gamma-Aminolevulinate


Input: Consider Input: The Hsp90-specific inhibitor geldanamycin selectively disrupts kinase-mediated signaling events of T-lymphocyte activation.


Output: geldanamycin