zap;
background white;
load mesotartaricacid2.pdb;
wireframe 25;
select all;
spacefill 20%;
select atomno=1,atomno=12;connect double modifyorcreate;
select none; select atomno=4,atomno=16;connect double modifyorcreate;
select none; select atomno=12,atomno=16;connect delete;
select all;
colour bonds [220,220,220];
select none;
center {0.0 0.0 0.0};
rotate z 71.0; rotate y 175.9; rotate z -168.84; set rotationRadius 5.68;
select atomno=1,atomno=2,atomno=5,atomno=7,atomno=9,atomno=11,atomno=12,atomno=13;