In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

Input: Consider Input: A molecular mechanism for ibuprofen-mediated RhoA inhibition in neurons.

Output: RhoA


Input: Consider Input: Design, synthesis and structure-activity relationship of new arginine vasopressin analogues containing proline derivatives in position 2.

Output: arginine vasopressin


Input: Consider Input: Synthesis of novel estrogen receptor antagonists using metal-catalyzed coupling reactions and characterization of their biological activity.


Output: estrogen receptor