| http://www.w3.org/ns/prov#value | - A2 and A3, independent of B2 and B3, may contain entirely from 1 to 11 carbon atoms, may contain a combination of 1 to 3 heteroatoms which may be selected independently from among N, 0, S, P or other heteroatoms together with from 1 to 10 carbon atoms or may contain from 1-3 ring-forming heteroatoms alone.
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