What is wrong with this syntax of this material

[ehud.septum766]

I am trying to define a new material to be imported to my Ansys project with Create/Edit Materials -> User Defined Database

Browsing the scm file and importing it I get the error

Error: GENERAL-CAR-CDR: invalid argument [1]: improper list

Error Object: myMaterial

The file content is

;;; File Created by John Doe
;;; 
(myMaterial solid
 (chemical-formula . #f)
 (density (constant . 800))
 (specific-heat (constant . 3600))
 (thermal-conductivity (constant . 5e-01))
 )

;;; End of File

Any help would be very welcome

[ehud.septum766]

Add a ( and trailing ) around the material:

;;; File Created by John Doe
(
(materialName solid
(chemical-formula . #f)
(density (constant . 800.))
(specific-heat (constant . 3600.))
(thermal-conductivity (constant . 5e-01))
)
)
;;; End of File