prov:value
| - 2)5 -; R39 is hydrogen, C1 -C4 alkyl or ##STR66## or R33 and R34, taken together, are ##STR67## and R40, R41, R42, R43, R44, R45, R46, R47, R48, R49, R50, R51, R52, R53, R54 and R55 are each independently of one another hydrogen or C1 -C4 alkyl, or R is a radical of formula ##STR68## or R is a radical of formula ##STR69## wherein R1, R2, R3 and R4 are each independently of one another hydrogen, C1
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