prov:value
| - X in the structural element of the formula I contains, as a divalent aliphatic radical, preferably 2 to 30 C atoms, as a heterocyclic radical, preferably 3 to 5 ring C atoms and 1 or 2 heteroatoms, for example N, O or S, as a cycloaliphatic radical, 5 to 8 ring C atoms, as an araliphatic radical, 7 to 30 C atoms, as an aromatic radical with linked aryl nuclei, 13 to 30 C atoms, and as a substitute
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