di-tert-butyl ((2S,2'S)-((3S,3'S)-((((3-methyl-6-oxo-1,6-dihydropyrazine-2,5-diyl)bis(propane-3,1-diyl))bis(azanediyl))bis(carbonyl))bis(3,4-dihydroisoquinoline-3,2(1H)-diyl))bis(3-(4-hydroxy-2,6-dimethylphenyl)-1-oxopropane-1,2-diyl))dicarbamate