| http://www.w3.org/ns/prov#value | - L1 to L5 represent substitution possibilities at each position and each represent hydrogen or hydrocarbon groups or functional groups such as cyano, halogen, haloalkyl, haloalkoxy, alkoxyl, amido, amino, sulfonyl, carbonyl, carbonyloxy and oxycarbonyl etc., with the provision that L1 and L2 together or L2 and L3 together can form a fused benzo ring.
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