You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,3R,7S,10R)-1-(2-methoxypropan-2-yl)-5,5,12,12-tetramethyl-4,6,8,11,13-pentaoxatricyclo[8.3.0.03,7]tridecan-9-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C16H26O7
assistant