MolScribe OSRA Markush structures: The variety of possible Markush structure modalities in patents is extensive and may contain partly hand-drawn up to completely abstract representations such as for peptide drug conjugates a sequence of arbitrary letters, e.g. D-L-P. These are typically not useful inputs for a successful structure prediction. However, more simple Markush structures such as those containing simple R-groups can be translated by DECIMER into an advanced, non-standard SMILES notation. As an example, figure