You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(2S,3S,6S)-6-[(2R,3R,4R,6S)-3-benzylsulfonyloxy-6-[(2R,3R,4R,6R)-6-hydroxy-2-methyl-4-phenylmethoxyoxan-3-yl]oxy-2-methyloxan-4-yl]oxy-2-methyloxan-3-yl] 4-oxopentanoate by IUPAC nomenclature, provide its molecular formula.
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C37H50O13S
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