prov:value
| - C(O), C(S)NR1 and CH2, E=a divalent saturated or unsaturated, linear, branched or cyclic hydrocarbon radical, which may contain from 0 to 5 heteroatoms from the group consisting of O, N and S and comprises from 0 to 18 carbon atoms, preferably from 1 to 12 carbon atoms, a=0 or 1, f=an integer from 2 to 1000, preferably from 2 to 100, particularly preferably from 2 to 50, n and m=an integer from 1
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