| http://www.w3.org/ns/prov#value | - ??H, ???OH, ???O, ???SH, ???S, halogen, optionally substituted alkyl, a monosaccharide or a disaccharide, R5 is C1-C4 alkyl, R6 is ???H, halogen or C1-C4 alkyl or R7 and R8 independently are moieties as previously defined such as independently selected ???CH2???, ???CH(??-ORPR)???, ???CH(??-ORPR)???, ???C(O)??? or ???O???, R9 is a moiety as previously defined such as ???CH2???, ???CH(??-halogen)-,
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