prov:value
| - neoxide group, R51, R52, and R53 each, independently of the others, is (1) a hydrogen atom, (ii) a hydroxy group, (iii) an amino group of the formula ???NR54R55, wherein R54 and R55 each, independently of the others, is a hydrogen atom, an alkyl group as defined for R51, R52, and R53, an aryl group as defined for R51, R52, and R53, an arylalkyl group as defined for R51, R52, and R53, or an alkylar
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