9328
These structural parameters are ( i ) the torsion angle governing the conjugation of the organic radical m - PyNO ( anti versus gauche ) , ( ii ) the coordination geometry of the acetyl acetonate ligands around the metal ion ( square versus rhombic ) , and ( iii ) the relative orientation of the organic radical with respect to the acetyl acetonate plane ( parallel versus perpendicular ) .
 m - PyNO, acetyl acetonate, acetyl acetonate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 m - PyNO, acetyl acetonate, acetyl acetonate