You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2R,3S,4R,5R,6S)-2-[(2R,3R,4R,5S)-4-hydroxy-2,5-bis(hydroxymethyl)-3-(2-methylpropanoyloxy)oxolan-2-yl]oxy-6-(hydroxymethyl)-4,5-bis(2-methylpropanoyloxy)oxan-3-yl] decanoate by IUPAC nomenclature, provide its molecular formula.
user
C34H58O15
assistant