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