You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 2-ethyl-5-[(4-ethylpiperazin-1-yl)-(3-methylphenyl)methyl]-[1,3]thiazolo[3,2-b][1,2,4]triazol-6-one .
user
C20H27N5OS
assistant