Patent ID: 8766007

Claim:
A compound having the structure of Formula (F): as a pharmaceutically acceptable salt, or stereoisomer, thereof, wherein: m is 0, 1, 2 or 3; R 21 and R 22 are each independently hydrogen, C 1 -C 5 alkyl or fluoroalkyl; R 3 and R 4 are each hydrogen; each R 6 is the same or different and independently hydrogen or C 1 -C 5 alkyl; R 9 is alkyl; R 12 and R 13 are the same or different and independently hydrogen, alkyl or —C(═O)R 9 ; each R 14 is the same or different and independently alkyl, halo, fluoroalkyl or —OR 6 ; and R 16 , R 17 and R 18 are each the same or different and independently hydrogen, alkyl, —OR 6 , carbocyclyl or aryl.