You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
tert-butyl-[1-(4-chlorophenyl)-4,4-dimethylhept-6-en-1-yn-3-yl]oxy-dimethylsilane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H31ClOSi
assistant