THE INVENTION PROVIDES NEW FORMS OF A CHEMICAL COMPOUND OF FORMULA (I). THE INVENTION RELATED TO FORMS OF A CHEMICAL COMPOUND (I), IN PARTICULAR TO CRYSTALLINE AND AMORPHOUS FORMS, MORE PARTICULARLY FOUR CRYSTALLINE FORMS AND AN AMORPHOUS FORM. THE INVENTION FURTHER RELATES TO PROCESSES FOR THE PREPARATION OF SUCH FORMS, TO PHARMACEUTICAL COMPOSITIONS COMPRISING THE COMPOUND IN CRYSTALLINE AND/OR AMORPHOUS FORM AND TO THERAPEUTIC USE OF SUCH FORMS.