(7S,16S,17S,27S,36S,37S,3R,23R)-37-((1S,2S)-2-methylcyclopropylcarbonyloxy)-1,8,11,14,20,21,28,31,34,40-decaaza-7,27-bis(1-hydroxy-isopropyl)-3,23-bis[(6-methoxyquinoxalin-2-yl)carbonylamino]-8,11,28,31-tetramethyl-5,25-dioxa-2,6,9,12,15,22,26,29,32,35-decaoxotricyclo[34.4.0.0<16,21