| http://www.w3.org/ns/prov#value | - S(O)ORa, S(O)2ORa, S(O)NRaRb, S(O)2NRaRb, P(O)ORaORb, B(OH)2, halogen, aryl, heteroaryl, biaryl, heterobiaryl, heterocyclic compound, and alkyl (branched, cyclic, or unbranched), preferably having from 1 to 20 carbon atoms, optionally containing a double or triple bond and optionally substituted with a heteroatom or other functional groups, such as a carboxylic acid, carboxylic ester, alcohol, et
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