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5,12,19,26-tetraethyl-5H,12H,19H,26H-benzo[4,5][1,3,2]diazaphospholo[1,2-a]benzo[4,5][1,3,2]diazaphospholo[1,2-c]benzo[4,5][1,3,2]diazaphospholo[1,2-e]benzo[4,5][1,3,2]diazaphospholo[1,2-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine
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5,12,19,26-tetraisopropyl-5H,12H,19H,26H-benzo[4,5][1,3,2]diazaphospholo[1,2-a]benzo[4,5][1,3,2]diazaphospholo[1,2-c]benzo[4,5][1,3,2]diazaphospholo[1,2-e]benzo[4,5][1,3,2]diazaphospholo[1,2-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine
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5,12,19,26-tetrabenzyl-5H,12H,19H,26H-benzo[4,5][1,3,2]diazaphospholo[1,2-a]benzo[4,5][1,3,2]diazaphospholo[1,2-c]benzo[4,5][1,3,2]diazaphospholo[1,2-e]benzo[4,5][1,3,2]diazaphospholo[1,2-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine
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5,12,19,26-tetrapropyl-5H,12H,19H,26H-benzo[4,5][1,3,2]diazaphospholo[1,2-a]benzo[4,5][1,3,2]diazaphospholo[1,2-c]benzo[4,5][1,3,2]diazaphospholo[1,2-e]benzo[4,5][1,3,2]diazaphospholo[1,2-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine
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5,12,19,26-tetra-sec-butyl-5H,12H,19H,26H-benzo[4,5][1,3,2]diazaphospholo[1,2-a]benzo[4,5][1,3,2]diazaphospholo[1,2-c]benzo[4,5][1,3,2]diazaphospholo[1,2-e]benzo[4,5][1,3,2]diazaphospholo[1,2-g][1,3,5,7,2,4,6,8]tetrazatetraphosphocine