#$%^&*AU2012211458A120120830.pdf#####C \NRPorhl)CC\DAR144117 IDOC -X/2012 ABSTRACT This invention provides a compound of the formula (1): R1-Y-N-X-N-Z (I) I I R 2 R 7 a pharmaceutically acceptable salt or solvate thereof, wherein R is optionally substituted lower alkyl, Y is -S(O)n- wherein n is I or 2, or -CO-, R2 is hydrogen or lower alkyl, R 7 is hydrogen or lower alkyl, X is lower alkylene, lower alkenylene, arylene, cycloalkylene or the like, and Z is lower alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl or the like.