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.

Ex Input:
Synthesis of quinoline derivatives: discovery of a potent and selective phosphodiesterase 5 inhibitor for the treatment of Alzheimer's disease.

Ex Output:
phosphodiesterase 5


Ex Input:
Reduction of oral ethanol self-administration in rats by monoamine oxidase inhibitors.

Ex Output:
monoamine oxidase


Ex Input:
Discovery of liver-targeted inhibitors of stearoyl-CoA desaturase (SCD1).

Ex Output:

stearoyl-CoA desaturase