RES
1b:x-lgal-HEX-x:x
2s:sulfate
3r:r1
4b:a-lgal-HEX-1:5
5s:sulfate
LIN
1:1o(3+1)2n
2:1o(4+1)3n
3:3n(4+1)4d
4:4o(3+1)5n
REP
REP1:6o(4+1)6d=-1--1
RES
6b:a-lgal-HEX-1:5
7s:sulfate
LIN
5:6o(3+1)7n