What this tells us is this is thermodynamically more stable and lower in energy than the CIS configuration. The question is why? Well, it's because in this case, all these atoms and this entire group, they point away. And so if they point away, there will be no steric hindrance, there will be no bumping of electrons or bumping of atoms, and there will be no electrostatic repulsion as a result of the bumping of atoms in this particular case. But if we flip it to basically form the CIS isomer, the CIS configuration, notice that now this alpha carbon and this alpha carbon, they point along the same direction. And now there will be stair kindle, there will be the bumping of electrons and atoms and that will increase the electrostatic repulsion due to the charges of these atoms.