You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[(5R)-5-(hydroxymethyl)-3-propoxy-2-(3-sulfopropoxy)cyclohexa-1,3-dien-1-yl]oxypropane-1-sulfonic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H28O10S2
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