| http://www.w3.org/ns/prov#value | - ted 5 or 6 membered heterocyclic compounds containing 1 to 2 heteroatoms selected from N, O and S which may be unsubstituted or substituted C1???C3 alkyl group; or [0027] m is an integer of 0 or 1, R2 is H or C1???C4 alkyl group; [0028] or R1 and R2 are joined to form a 5- and 6-membered heterocyclic ring containing 1 to 2 hetero atoms selected from N, O and S, [0029] n is an integer from 0 to 4,
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