You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,4R,5R,7R)-7-but-3-en-2-yl-5-[[tert-butyl(dimethyl)silyl]oxymethyl]bicyclo[2.2.1]hept-2-en-7-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H32O2Si
assistant