Atomic structure
There is only one chemically distinct structure:
Cc1cn([C@H]2C[C@H](OC[C@H]3O[C@@H](n4cc(C)c(=O)[nH]c4=O)C[C@@H]3OC[C@H]3O[C@@H](n4cnc5c(N)ncnc54)C[C@@H]3OC[C@H]3O[C@@H](n4cnc5c(N)ncnc54)C[C@@H]3O)[C@@H](CO[C@H]3C[C@H](n4cc(C)c(=O)[nH]c4=O)O[C@@H]3CO[C@H]3C[C@H](n4cnc5c(N)ncnc54)O[C@@H]3CO[C@H]3C[C@H](n4cnc5c(N)ncnc54)O[C@@H]3CO)O2)c(=O)[nH]c1=O