As a prerequisite for the calculation of 3D coordinates, all hydrogens are converted to explicit hydrogens for template recognition.
The resulting molecular structures have 3D coordinates calculated for all atoms, including the explicit hydrogens. Molecular structures
for which the calculations failed are returned as missing values.
Standing problems:
- condensed ring systems which are unknown for the template class
- vdWaals clashes
- stereochemistry
- chains running through ring systems
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