Discovery: add SeTaTe (1SeTaTe-2)

active_challenge.csv

@@ -636,3 +636,4 @@ OSC-00839,2SeTeV2-1,2SeTeV2-1,Se2Te2V4,discovery,light,,ok,0.14685,1.1748,8.0,-0
 OSC-00842,2SeV-2,2SeV-2,Se2V2,discovery,light,,ok,0.17968,1.43744,8.0,0.4113,1.6933,,0.6667,0.53598,gaussian_dos_scf_mesh,0.00483,,
 OSC-00843,2SeW-1,2SeW-1,Se2W2,discovery,light,,ok,0.14321,1.14568,8.0,3.1425,1.5798,,0.5556,0.51073,gaussian_dos_scf_mesh,0.0,,
 OSC-00845,2WSe2-1,2WSe2-1,Se4W2,discovery,light,,ok,0.18233,1.45864,8.0,0.2881,1.9659,,0.9444,0.09739,gaussian_dos_scf_mesh,0.00283,,
+OSC-00848,1SeTaTe-2,1SeTaTe-2,SeTaTe,discovery,light,,ok,0.26543,2.12344,8.0,0.496,1.0744,,0.0556,1.04965,gaussian_dos_scf_mesh,0.04523,,