1. A compound of formula (I) wherein R is phenyl, which is unsubstituted or monosubstituted by halogen, (CC) alkyl, (CC) alkoxy, (CC) fluoroalkyl or (CC) fluoroalkoxy； R is hydrogen, methyl or cyclopropyl； R and R are methyl ； or R and R, together with the carbon atom to which they are attached, form a cyclopropyl ring； and Q is O or S； or a salt of such a compound. 2. The compound of formula (I) according to claim 1, wherein R is phenyl, which is unsubstituted or monosubstituted halogen, (C-C) alkyl, (C-C) alkoxy, (C-C) fluoroalkyl or (C-C) fluoroalkoxy； R is hydrogen or methyl； R and R are methyl； or R and R, together with the carbon atom to which they are attached, form a cyclopropyl ring； and Q is O； or a salt of such a compound. 3. The compound of formula (I) according to claim 2, in which R is phenyl, which is unsubstituted or monosubstituted by halogen, (C-C) alkyl or (C-C) alkoxy； or a salt of such a compound. 4. The compound of formula (I) according to claim 1, where in the case where R represents a monosubstituted phenyl group, then said phenyl group is substituted in the meta position； or a salt of such a compound. 5. The compound of formula (I) according to claim 3, where in the case where R represents a monosubstituted phenyl group, then said phenyl group is substituted in the meta position； or a salt of such a compound. 6. The compound of formula (I) according to any one of claims 1 or 3-5, in which R denotes hydrogen or methyl； or a salt of such a compound. 7. The compound of formula (I) according to any one of claims 1 to 5, in which R and Roba are methyl； or a salt of such a compound. 8. The compound of formula (I) according to claim 6, in which R and Roba are methyl； or a salt of such a compound. 9. Compound1. Соединение формулы (I),в которойRобозначает фенил, который является незамещенным или монозамещенным галогеном, (C-C)алкилом, (C-C)алкоксигруппой, (C-C)фторалкилом или (C-C)фторалкоксигруппой；Rобозначает водород, метил или циклопропил；Rи Rоба
