| http://www.w3.org/ns/prov#value | - p-hexadecyloxyphenyl sulfonyl), a C6-32 (preferably C6-24) aryl group (e.g., phenyl, p-tolyl) or a cyano group. [0304] R16 is a halogen atom (preferably Cl), a C1-24 (preferably C3-18) alkyl group (e.g., the same alkyl group as exemplified for R15 above), a C5-17 cycloalkyl group (e.g., cyclopentyl, cyclohexyl), a C6-32 (preferably C6-24) aryl group (e.g., phenyl, p-tolyl), a C1-24 (preferably C1
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