| http://www.w3.org/ns/prov#value | - The ring-forming elements of A., A_, Ag and A7 independent of B., B5, Bg and B? may contain entirely from 1-11 carbon atoms, may contain a combination of from 1-10 carbon atoms and from 1-3 heteroatoms which may be selected independently from among N, 0, S, P or other heteroatoms, or may contain from 1-3 heteroatoms alone.
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