A compound of Formula I: or a pharmaceutically acceptable salt thereof, in which R 11 is selected from the group consisting of 4-(pyrrolidin-1-yl)piperidin-1-yl, N-methyl-3-(pyrrolidin-1-yl)propan-1-amino, N 1,N 1,N 3 -trimethylpropane-1,3-diamino, N,N-dimethylpiperidin-4-amino, 3-(pyrrolidin-1-ylmethyl)azetidin-1-yl, 3-(pyrrolidin-1-ylmethanon)azetidin-1-yl, 3-(morpholin- 4-ylmethyl)azetidin-1-yl, 3-(2-ethanolamino-N-methyl)azetidin-1-yl, 3-(morpholin- 4-yl)pyrrolidin-1-yl, 3-(morpholin- 4-ylmethyl)pyrrolidin-1-yl, 4-(ethylamido)piperidin-1-yl, 3-(aminomethyl)azetidin-1-yl, 4-(morpholin-4-yl)piperidin-1-yl, 4-(morpholin-4-ylmethyl)piperidin-1-yl, 3-amidoazetidin-1-yl, 3-(propan-2-ol-2-yl)azetidin-1-yl, 3-(methylsulfonamide-N-methyl)azetidin-1-yl, 3-(methylamido-N-methyl)azetidin-1-yl, and 3-(methylamino-N-methyl)azetidin-1-yl; R 13 is selected from the group consisting of oxazole optionally substituted with one or more of substituents A, oxadiazole optionally substituted with one or more of substituents A, thiophene optionally substituted with one or more of substituents A, thiazole optionally substituted with one or more of substituents A, furan optionally substituted with one or more of substituents A, pyrazole optionally substituted with one or more of substituents A, N-methylpyrazole optionally substituted with one or more of substituents A, 2-pyridine optionally substituted with one or more of substituents A, 3-pyridine optionally substituted with one or more of substituents A, and 4-pyridine optionally substituted with one or more of substituents A, where A is selected from the group consisting of alkyl, alkoxy, alkthiolyl, isopropyl, t-butyl, trifluoromethyl, chloro, cyano, CF 3 O-, methanonyl, methylsulfonyl, trifluoromethylsulfonyl, amide (connected in either direction) optionally substituted with one or more alkyl, -CH 2 OH, 1-ol-2,2,2-trifluoroethan-1-yl, 2-ol-propan-2-yl, and cyclopropyl; and R 12 and R 14 are each independently hydrogen or alkyl; with the proviso that if A is 1-ol-2,2,2-trifluoroethan-1-yl, then it cannot be connected to thiophene. in which R 11 is selected from the group consisting of 4-(pyrrolidin-1-yl)piperidin-1-yl, N-methyl-3-(pyrrolidin-1-yl)propan-1-amino, N 1,N 1,N 3 -trimethylpropane-1,3-diamino, N,N-dimethylpiperidin-4-amino, 3-(pyrrolidin-1-ylmethyl)azetidin-1-yl, 3-(pyrrolidin-1-ylmethanon)azetidin-1-yl, 3-(morpholin- 4-ylmethyl)azetidin-1-yl, 3-(2-ethanolamino-N-methyl)azetidin-1-yl, 3-(morpholin- 4-yl)pyrrolidin-1-yl, 3-(morpholin- 4-ylmethyl)pyrrolidin-1-yl, 4-(ethylamido)piperidin-1-yl, 3-(aminomethyl)azetidin-1-yl, 4-(morpholin-4-yl)piperidin-1-yl, 4-(morpholin-4-ylmethyl)piperidin-1-yl, 3-amidoazetidin-1-yl, 3-(propan-2-ol-2-yl)azetidin-1-yl, 3-(methylsulfonamide-N-methyl)azetidin-1-yl, 3-(methylamido-N-methyl)azetidin-1-yl, and 3-(methylamino-N-methyl)azetidin-1-yl; R 13 is selected from the group consisting of oxazole optionally substituted with one or more of substituents A, oxadiazole optionally substituted with one or more of substituents A, thiophene optionally substituted with one or more of substituents A, thiazole optionally substituted with one or more of substituents A, furan optionally substituted with one or more of substituents A, pyrazole optionally substituted with one or more of substituents A, N-methylpyrazole optionally substituted with one or more of substituents A, 2-pyridine optionally substituted with one or more of substituents A, 3-pyridine optionally substituted with one or more of substituents A, and 4-pyridine optionally substituted with one or more of substituents A, where A is selected from the group consisting of alkyl, alkoxy, alkthiolyl, isopropyl, t-butyl, trifluoromethyl, chloro, cyano, CF 3 O-, methanonyl, methylsulfonyl, trifluoromethylsulfonyl, amide (connected in either direction) optionally substituted with one or more alkyl, -CH 2 OH, 1-ol-2,2,2-trifluoroethan-1-yl, 2-ol-propan-2-yl, and cyclopropyl; and R 12 and R 14 are each independently hydrogen or alkyl; with the proviso that if A is 1-ol-2,2,2-trifluoroethan-1-yl, then it cannot be connected to thiophene.