The present invention relates to a compound of formula (I)
or a pharmaceutically acceptable salt or ester thereof, wherein R
1
to R
8
, A
1
to A
3
have the are as described herein and compositions including the compounds.
The present invention relates to a compound of formula (I)
or a pharmaceutically acceptable salt or ester thereof, wherein R1 to R8, A1 to A3 have the are as described herein and compositions including the compounds.