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