| http://www.w3.org/ns/prov#value | - and are each hydrogen or an organic radical having from 1 to 40 carbon atoms or R7 and R8 together with the atoms connecting them form a monocyclic or polycyclic, substituted or unsubstituted ring system which has from 1 to 40 carbon atoms and may also contain heteroatoms selected from the group consisting of the elements Si, Ge, N, P, O, S, Se and Te, A is a bridge consisting of a divalent atom o
|
