Patent ID: 8148577

Claim:
A compound having the formula (I): or a salt thereof, wherein: n is an integer from 1 to 12; m and p are independently an integer from 1 to 5; q is 0 or 1; each R 1 is independently selected from the group consisting of; C 1 -C 8 substituted or unsubstituted alkyl, C 4 -C 15 substituted or unsubstituted cycloalkyl, C 3 -C 15 substituted or unsubstituted branched alkyl, C 6 -C 20 substituted or unsubstituted aryl, C 6 -C 20 substituted or unsubstituted heteroaryl, C 7 -C 24 substituted or unsubstituted aralkyl, and C 7 -C 24 substituted or unsubstituted heteroaralkyl and, each R 2 is independently selected from hydrogen or a C 1 -C 8 substituted or unsubstituted alkyl.