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| n | divrel | |
| FIASMAs | 72 | 0.667 |
| Whole experimental set | 276 | 0.711 |
| ATC-set | 2028 | 0.709 |
| Pure Natural Products | 768 | 0.747 |
Structural diversity was estimated by a new measure called relative structural diversity (divrel, see experimental section). The set of FIASMAs is a subset of the whole experimental set investigated here.
