You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl 4-[5-[3-[tert-butyl(dimethyl)silyl]oxypropyl]-1-benzothiophen-2-yl]-4-oxobutanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H38O4SSi
assistant