#$%^&*AU2018200421A120180208.pdf#####1: dar Interwoven NRPortbl DCC DAR 16320914_l.docx-18 01 2018 ABSTRACT The invention relates to compound of the formula (1) or a salt thereof, wherein the substituents are as defined in the specification; to its preparation, to its use as medicament and to medicaments comprising it. 0 0 ,--R4 ,Rl N '--R 5 N R2 R 3 R 24 (')