Patent ID: 8563742

Claim:
A compound of the following formula or a pharmaceutically acceptable salt thereof: wherein n is 1, 2 or 3; R 1 is selected from the group consisting of: wherein R 2 is selected from the group consisting of: —C 1-4 alkyl and -L 1 -C 1-4 alkyl, wherein L 1 is selected from the group consisting of —S—, and —SO 2 —, R 3 is selected from the group consisting of: hydrogen and —C 1-4 alkyl, R 4 is selected from the group consisting of: hydrogen and —C 1-4 alkyl, wherein the alkyl groups in R 2 , R 3 , and R 4 are optionally substituted with one or more substituents independently selected from the group consisting of: fluoro and chloro; L 2 is a direct bond; R 5 is wherein each of R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 , R 17 , R 18 and R 19 is independently R a , and R 6 is selected from the group consisting of: hydrogen and methyl, wherein the methyl group is optionally substituted with one or more halogens; wherein R a is selected from the group consisting of: -hydrogen, -halogen, —C 1-6 alkyl, -phenyl, cycloalkyl, and —O—C 1-6 alkyl, wherein the alkyl, cycloalkyl, and phenyl groups are each optionally substituted with one or more substituents independently selected from R b ; and R b is selected from the group consisting of: halogen, —C 1-6 alkyl, and -halo-C 1-4 alkyl.