ethyl 4-[[5-[[4-[4-[[(6~{a}~{S})-2-methoxy-11-oxidanylidene-6~{a},7,8,9-tetrahydropyrrolo[2,1-c][1,4]benzodiazepin-3-yl]oxy]butanoylamino]-1-methyl-pyrrol-2-yl]carbonylamino]-1-benzothiophen-2-yl]carbonylamino]-1-methyl-imidazole-2-carboxylate