Name: OPSIN
Homepage: http://opsin.ch.cam.ac.uk/
Reference:
 - Title: "Chemical Name to Structure: OPSIN, an Open Source Solution"
   Author: D. M. Lowe and P. T. Corbett and P. Murray-Rust and R. C. Glen
   Journal: J. Chem. Inf. Model.
   Year: 2011
   Volume: 51
   Pages: 739-753
   DOI: 10.1021/ci100384d
