Patent ID: 7910739

Claim:
A compound having the following formula or a tautomer, or a pharmaceutically acceptable salt thereof; wherein each of R 1 , R 2 , R 3 , R 4 , and R 5 is, independently, selected from the group consisting of hydrogen, —CN, and halogen: Z is selected from the group consisting of hydrogen and unsubstituted alkyl; -(L) k -(L) m -(L) n -(L) q -(L) x -(L) w - is selected from the formulae —(CH 2 ) k —CO—NR a —(CH 2 ) w —, —(CH 2 ) k —NR a —CO—(CH 2 ) w —, —(CH 2 ) k —CO—NR a —(CH 2 ) q —NR a —(CH 2 ) w , —(CH 2 ) k —NR a —CO—(CH 2 ) q —NR a —(CH 2 ) w —, and —(CH 2 ) k —O—CO—NR a —(CH 2 ) w —; wherein: R a is H or unsubstituted alkyl; each of k, q and w is an integer independently selected from the group consisting of 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, with the proviso that k+q+w is at least 4.