How i can reduce the number of atoms using Vesta ?

I'm a new Vesta learner, I have downloaded cif of Ch3Nh3PbI3. Total number of atom in chemical formula for Ch3Nh3PbI3 is 12. But when i convert this cif to poscar file using Vesta, total number of...

15 January 2021 6,117 11 View