prov:value
| - e group ##STR12## wherein R.sup.14 denotes a linear C.sub.1 -C.sub.3 -alkyl group, and the physiologically acceptable salts thereof.In the general formula I, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent, independently of one another, a hydrogen atom, a halogen atom, e.g. a fluorine, chlorine or bromine atom, chlorine being preferred, a linear C.sub.1 -C.sub.3 -alkyl group,for example a propyl,
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