| http://www.w3.org/ns/prov#value | - in which n and m are the same or different and are whole numbers from 1 to 6, the R groups are the same or different and are hydroxyl groups or have the meaning given above, and in which A is selected from the group consisting of NH-- and --NH--(CH2 --CH2 --NH)n -- in which n is a whole number from 1 to 6.
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