prov:value
| - R2 is selected from the group consisting of hydrogen, halogen, (C1-C10)alkyl, (C2-C10)heteroalkyl, hetero(C1-C10)cycloalkyl, (C1-C10)alkylaryl and (C2-C10)heteroalkylaryl, optionally R2 may be combined with L to form a 5-, 6-, 7- or 8-membered ring containing from 1 to 3 heteroatoms selected from the group consisting of N, O and S. In certain embodiments, R2 is a member selected from the group con
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