prov:value
| - B is a leaving group, OH, a residue of a hydroxyl-containing moiety, a residue of an amine-containing moiety or wherein E5 is independently selected from the same group which defines E1-4; E10-30 are independently selected from the group consisting of hydrogen, C1-6 alkyls, C3-12 branched alkyls, C3-8 cycloalkyls, C1-6 substituted alkyls, C3-8 substituted cycloalkyls, aryls, substituted aryls, ara
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