7987
As revealed by electrospray ionization mass spectrometry ( ESI - MS ) , fluorescence titration and X - ray crystallography , tetraoxacalix [ 2 ] arene [ 2 ] triazine has been found to form 1 : 1 complexes with four typical polyatomic anions of different geometries and shapes in the gaseous phase , in solution , and in the solid state .
 Chemical: tetraoxacalix [ 2 ] arene [ 2 ] triazine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: tetraoxacalix [ 2 ] arene [ 2 ] triazine