The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, A1, A2, A3, A4, A5 and n are as described herein, compositions including the compounds and methods of using the compounds.本發明提供具有通式(I)之新穎化合物其中R1、R2、R3、R4、R5、R6、A1、A2、A3、A4、A5及n如本文中所述,包括該等化合物之組合物,及該等化合物之使用方法。