| http://www.w3.org/ns/prov#value | - R is an alkyl radical with up to 25 C atoms which may be unsubstituted, mono- or polysubstituted by halogen or CN, it being also possible for one or more non-adjacent CH2 groups to be replaced, in each case independently from one another, by ???O???, ???S???, ???NH???, ???N(CH3)???, ???CO???, ???COO??????OCO???, ???OCO???O???, ???S???CO???, ???CO???S??? or ???C???C??? in such a manner that oxygen
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