| http://www.w3.org/ns/prov#value | - Within these designations, each R2 and R3 is a member independently selected from the group consisting of H, (C1-C8)alkyl, halo(C1-C8)alkyl, ???X3OR9, aryl, aryl(C1-C4)alkyl, and heteroaryl, or optionally, if both present on the same substituent, may be joined together to form a three- to eight-membered ring system.
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