prov:value
| - R1 is a moiety such as H, halogen, acrylate, formyl, carboxyl, cyano, ester, amide, alkyl, alkoxy, oxoalkyl, alkenyl, alkynyl, aryl or arylalkyl, which moiety may optionally be substituted with one or more substituents; and/or interrupted by one or more hetero atoms; and/or straight chain, branched chain, hydrophobic, hydrophilic, and/or fluorophilic; with the proviso that at least one of R1, R2,
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