You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [6-[5-decanoyloxy-2-methyl-6-[(7,25,26-trihydroxy-5,24-dimethyl-10-oxo-20-pentyl-2,4,9,21,23-pentaoxatricyclo[20.4.0.03,8]hexacosan-6-yl)oxy]-4-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-methyloxan-3-yl] decanoate by IUPAC nomenclature, provide its molecular formula.
user
C66H116O25
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