You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 3-[2-(3,5-dimethyl-4-nitropyrazol-1-yl)ethyl]-4-(1-ethyl-5-methylpyrazol-4-yl)-1H-1,2,4-triazole-5-thione ?
user
C15H20N8O2S
assistant