The invention relates to a compound of formula (I)
wherein A
1
to A
3
and R
1
to R
3
are defined as in the description and in the claims. The compound of formula (I) can be used as a medicament.
The invention relates to a compound of formula (I)
wherein A1 to A3 and R1 to R3 are defined as in the description and in the claims. The compound of formula (I) can be used as a medicament.