RES
1r:r1
REP
REP1:2o(9+2)2d=-1--1
RES
2b:a-dgro-dgal-NON-2:6|1:a|2:keto|3:d
3s:n-acetyl
4s:acetyl
LIN
1:2d(5+1)3n
2:2o(7+1)4n