| http://www.w3.org/ns/prov#value | - roups); cyano, 1,1-(alkoxyl or aryloxy)2 alkyl (where the two aryl or alkyl substituents can be independently defined, or linked to one another to form a ring, such as 1,3-dioxane or 1,3-dioxolane, connected to L1 (or L2 in the case of R2) at the 2-position); 1,3-dioxane or 1,3-dioxolane connected to L1 (or L2 in the case of R2) at the 4-position.
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