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\usepackage{carbohydrates}
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\fancyhead[LO,LE]{Food Chemistry}
\fancyhead[CO,CE]{Andrew Lorimer}

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\begin{document}

  \title{Food chemistry}
  \author{Andrew Lorimer}
  \date{}
  \maketitle

  \subsection*{Carbohydrates}

  \subsubsection*{Monosaccharides}

  The smallest carbohydrates.

  \chemname{\glucose[model=haworth, ring]}{\(\alpha\) glucose \\ \ce{C6H12O6}}
  \chemname{\glucose[anomer=beta, model=haworth, ring]}{\(\beta\) glucose \\ \ce{C6H12O6}}
  \chemname{\galactose[model=haworth, ring]}{galactose \\ \ce{C6H12O6}}
  \chemname{\mannose[model=haworth, ring]}{mannose \\ \ce{C6H12O6}}
  \chemname{\xylose[model=haworth, ring]}{xylose\\ \ce{C5H10O5}}
  \setchemfig{cram width=2pt}
  \chemname{\chemfig{(-[:90]HO)(-[:270]HOCH2)-[:-45](-[:270, 0.5]HO)-(-[:90, 0.5]OH)-[:45]D-[:135]E}}{fructose \\ \ce{C6H12O6}}
  
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