Patent ID: 8703100

Claim:
A compound being of the formula (FX1): wherein: R 1 and R 3 are each independently —(CH 2 ) a (CH 2 CH 2 O) b R 5 , —(CH 2 CH 2 O) b R 5 , or —(CH 2 ) a Y 1 ; each Y 1 is independently —OR 6 , —(CHOH) c R 7 , —NR 8 R 9 , —NHCO(CHOH) c R 7 or —NHCO(CH 2 ) a (CH 2 CH 2 O) b R 5 ; each of R 2 , R 4 , R 5 , R 6 and R 7 are independently —H or C 1 -C 6 alkyl; R 8 and R 9 are independently —H, C 1 -C 3 alkyl, —(CH 2 ) a (CHOH) c R 7 , or —(CH 2 ) a (CH 2 CH 2 O) b R 5 ; each a and c is independently an integer selected from the range of 0 to 6; each b is independently an integer selected from the range of 1 to 120; each p and q is independently an integer selected from the range of 0 to 120; each of m and n is independently an integer selected from the range of 3 to 6.