Discovery: add N2Nb3 (1N2Nb3-1)

active_challenge.csv

@@ -776,3 +776,4 @@ OSC-01271,2LiNiSb-1,2LiNiSb-1,Li2Ni2Sb2,discovery,light,,ok,0.23577,1.88616,8.0,
 OSC-01293,1NMo2-1,1NMo2-1,Mo2N,discovery,light,,ok,0.23409,1.87272,8.0,2.87,0.774,,0.2222,0.51226,gaussian_dos_scf_mesh,0.04812,,
 OSC-01295,1N3Mo4-1,1N3Mo4-1,Mo4N3,discovery,light,,ok,0.17116,1.36928,8.0,6.5055,1.0023,,0.0,0.51576,gaussian_dos_scf_mesh,0.03844,,
 OSC-01296,1MoSb2-1,1MoSb2-1,MoSb2,discovery,light,,ok,0.23243,1.85944,8.0,2.7551,1.7571,,0.7222,1.02506,gaussian_dos_scf_mesh,0.00718,,
+OSC-01297,1N2Nb3-1,1N2Nb3-1,N2Nb3,discovery,light,,ok,0.12746,1.01968,8.0,4.6601,1.2532,,0.2222,1.09483,gaussian_dos_scf_mesh,0.04812,,