zap;
background white;
load allene.pdb;
wireframe 25;
select atomno=1,atomno=2;connect double modifyorcreate;
select none;select atomno=2,atomno=3;connect double modifyorcreate;
select all;
colour bonds [220,220,220];
select none;
reset;center {-2.8715 4.5585 0.47050002}; rotate z -148.56; rotate y 48.16; rotate z -89.6;