prov:value
| - xyl, trimethylcyclohexyl, t-butylcyclohexyl, 2,2,6,6-tetramethyl-4-piperidyl or 1,2,2,6,6-pentamethyl-4-piperidyl, R5 is a direct bond or C1 -C4 alkylene, R7 is hydrogen or methyl and R8 is --CN or a group --COOR9 with R9 being as defined above, and, if n is 2, A is one of the groups of the formula (IVa)-(IVd) in which Z is as defined above for X and Y, R17 is a direct bond or C1 -C8 alkylene and
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