| abstract |
The present invention relates to a compound of the formula (I) wherein R 1 represents a substituted or unsubstituted C1-6 alkyl group, R 2 represents a substituted or unsubstituted C1-8 alkyl group, 3 represents a hydrogen atom or a substituted or unsubstituted C1-6 alkyl group; A represents a substituted or unsubstituted o-phenylene group; a substituted or unsubstituted benzylene group; and B represents an oxy group, Or Q represents an unsubstituted oxymethylene group, and Q represents a substituted or unsubstituted o-phenylene group) or a salt thereof. Embedded image |