You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,4R,5R)-3,4-dimethoxy-2-(methoxymethyl)-5-[[(2S,3R,4S,5R,6R)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxymethyl]oxolan-2-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H36O11
assistant