Fig. 1: The two-dimensional structure of a drug.

Two-dimensional structure of (A) cisplatin and (B) cordycepin (obtained from PubChem compound http://pubchem.ncbi.nlm.nih.gov/).
Two-dimensional structure of (A) cisplatin and (B) cordycepin (obtained from PubChem compound http://pubchem.ncbi.nlm.nih.gov/).