You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(2S,3S,6S)-3,4,5-trihydroxy-6-[(2S)-3-[(E)-icos-11-enoyl]oxy-2-[(E)-octadec-4-enoyl]oxypropoxy]oxan-2-yl]methanesulfonic acid into molecular formula.
user
C47H86O12S
assistant