http://www.w3.org/ns/prov#value | - , --NR'--, NH--CO--, trifluoroacetamido and phtalimido groups and the other of said (CH2)m and (CH2)q groups is linked to the heterocyclic base with a carbon to carbon bond; each of m and q is independently 0 to 8, inclusive; r is 0 or 1, and each of R4 and R6 is independently H, OR, SR, NHOR, NH2, or NH(CH2)t NH2 where R is H or C1-6 alkyl and t is an integer from 0 to 12. 11.
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