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Table 2 Number of constitutional assignments suggested for 3 depending on the type of correlation information used.

From: Statistical filtering for NMR based structure generation

  open atom types fixed atom types
  no filter after filter no filter after filter
CH 523,668 252,566 1,904 1,486
CHA 39,025 13,473 86 70
CHN 716 275 17 14
CHAN 81 17 2 2
  1. The correlations are encoded as: C = COSY, H = 13C-HMBC, N = 15N-HMBC and A = 1,1-ADEQUATE.