code: @Override
      public IAtomContainer get(int i) {
          Point3d[] tmp = coordinates.get(i);
          for (int j = 0; j < atomContainer.getAtomCount(); j++) {
              IAtom atom = atomContainer.getAtom(j);
              atom.setPoint3d(tmp[j]);
          }
          return atomContainer;
      }
docs: Get the conformer at a specified position.
  
  @param i The position of the requested conformer
  @return The conformer