You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (2S,3S,4S,5R,6R)-6-[(2R,3S,4R,5R,6S)-4,6-dihydroxy-2-(hydroxymethyl)-5-(sulfoamino)oxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C12H21NO14S
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