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. 2018 May 18;10:23. doi: 10.1186/s13321-018-0279-6

Table 4.

Comparison of curated and OPSIN-derived SMILES

Count % Type
19,475 64.68 Identical
1648 5.47 Missing description of configuration around double bonds in OPSIN
17 0.06 Different number of explicit H
602 2.00 Missing chirality information in OPSIN
49 0.16 Missing chirality information in this work
1130 3.75 Different representation of racemates
2474 8.22 Different representation of nitro groups
33 0.11 Different representation of other groups
667 2.22 Different charge settings
18 0.06 Different aromaticity settings
302 1.00 Different bond orders
66 0.22 Different representation of ionic compounds
25 0.08 Missing O moieties in OPSIN
94 0.31 Different connectivity
74 0.25 Different number of rings
954 3.17 Different number of moieties
229 0.76 Different configuration around double bonds
233 0.77 Different configurations at chiral centres
50 0.17 Missing moieties in OPSIN
17 0.06 Missing moieties in this work
166 0.55 Missing C atoms in OPSIN
87 0.29 Missing C atoms in this work
190 0.63 Different stoichiometry
342 1.14 Different chemical composition
1167 3.88 Reason different from those listed above
30,109 100.00 Total

The discrepancies are listed in the table in increasing order of severity. Any entry displaying more than one discrepancy reason is included only in the category corresponding to the most serious discrepancy reason found (i.e., that closer to the bottom of the table)