You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3S,4R,5R,6S)-3,4-diacetyloxy-6-(2,2-dimethylpropoxy)-5-methyloxan-2-yl]methyl acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H30O8
assistant