| http://www.w3.org/ns/prov#value | - The ring-forming elements of groups A8, A9 and A10 independent of groups B8, B9, B10 and B11 may contain entirely from 2-10 carbon atoms, may contain from 1-10 carbon atoms in combination with 1-3 heteroatoms which may be selected independently from among N, O, S, P or other heteroatoms, or may contain from 2-3 heteroatoms alone.
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