the chemical changes brought about by the action of microorganisms on various substances.
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(1S,3S,6R,8S,10R)-4-Benzyl-10-hydroxy-4-aza-tricyclo[4.4.0.03,8]decan-5-one
3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione
