| http://www.w3.org/ns/prov#value | - ; each of R2 and R3 is selected from the group consisting of H, CH3 and C2 H5 ; each of n and p is an integer from 0 to 8, provided that when p=0, n is greater than 0; each of m and r is an integer selected from 0 to 20, provided when r=0, m is greater than 0; and s is an integer from 2 to 20.
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