The composition of ISG-2 was updated from ISG-1 without MgO. The total divalent cation contents were designed to be the same for ISG-1 and ISG-2. The glass compositions without a negligible amount of La 2 O 3 , referred to as ISG-2 in this study, were modeled as an application of NNMD. To obtain sufficient statistics of the structural data for a small amount of Al and Zr, a larger simulation cell with 21568 atoms was used for the glass. The simulation conditions, T max , t m , and r c , were 2400 K, 400 ps, and 5 K/ps, respectively.