mol2ps is a freely available command-line utility program which reads
molecular structure files in different formats and generates
Postscript output for 2D display. The Postscript file can then be used
e.g. for creating a bitmap file, using a Postscript interpreter like
Ghostscript.

WWW: http://merian.pch.univie.ac.at/~nhaider/cheminf/mol2ps.html