RES 1b:x-dgal-HEX-1:5 2s:methyl 3b:b-dgal-HEX-1:5 4b:a-dgal-HEX-1:5 5s:methyl LIN 1:1o(2+1)2n 2:1o(4+1)3d 3:3o(3+1)4d 4:4o(2+1)5n