L2H l2h (12S,27S)-12,27-bis(4-aminobutyl)-4,30-dimethyl-3,7,14,18,22,29-hexaoxa-11,26,31,32,33,34,35,36-octaazaheptacyclo[26.2. 1.1~2,5~.1~6,9~.1~13,16~.1~17,20~.1~21,24~]hexatriaconta-1(30),2(36),4,6(35),8,13(34),15,17(33),19,21(32),23,28(31)-dode caene-10,25-dione L2H