You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[4-[[2-(4-methylphenyl)-1,3-thiazol-4-yl]methyl]piperazin-1-yl]-N-prop-2-enylacetamide into its molecular formula.
user
C20H26N4OS
assistant