RES
1b:x-dxyl-PEN-1:5
2b:b-dxyl-PEN-1:5
3b:b-dxyl-PEN-1:5
4b:a-lara-PEN-1:4
LIN
1:1o(4+1)2d
2:2o(4+1)3d
3:3o(2+1)4d