| http://www.w3.org/ns/prov#value | - and halogen atoms and R, in which R is a member selected from the group consisting of hydrocarhon radicals having 1 to 20 carbon atoms and derivatives thereof, R' and R each is a member selected from the group consisting of hydrogen atom, hydrocarbon radicals having 1 to 20 carbon atoms and derivatives thereof including the case when R and R are mutually united at the part other than N and also
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