| http://www.w3.org/ns/prov#value | - erably 1 to 12 carbon atoms, such as a methylthio group and an ethylthio group), arylthio groups (preferably having 6 to 20 carbon atoms, more preferably 6 to 16 carbon atoms, and particularly preferably 6 to 12 carbon atoms, such as a phenylthio group), sulfonyl groups (preferably having 1 to 20 carbon atoms, more preferably 1 to 16 carbon atoms, and particularly preferably 1 to 12 carbon atoms,
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