On wikipedia, it says that the IUPAC name for glucose is 6-(hydroxymethyl)oxane-2,3,4,5-tetrol.
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Glucose (or dextrose, but chemically
6-(hydroxymethyl)oxane-2,3,4,5-tetrol) is C6H12O6.
Fructose (or levulose but also called fruit sugar) is also
C6H12O6 but it's structure is different than glucose.
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6-(hydroxymethyl)oxane-2,3,4,5-tetrol is one that is very safe.
It is typically administered by drinking "slushies" full of the
drug or eating food that is laced with it. It can make a person
feel very good. The high is of moderate length (typically 30
minutes to a few hours).
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sucrose
(C12H22O11
sucrose or glucose)
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This abbreviated name is sucrose - in the English language.
But the official name after the IUPAC rules is very long and complicate: