You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2-benzyl-1,3-thiazol-4-yl)-N-[4-(4-ethylpiperazin-1-yl)-2-methylphenyl]acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H30N4OS
assistant