Babel requires a valid OpenEye license for the product OEChem
and only OEChem licensees are entitled to use Babel.
(One feature, generating 2D coordinates, invoked by the
option -add2d, requires an Ogham (oedepict) license,
but this is not required for all other operations.)
The license file should be defined by environment variable
OE_LICENSE.
To request an evaluation license use OpenEye's online request form.
If already a licensee, contact support@eyesopen.com or your local
system administrator for a license file. To purchase OEChem and Babel,
or other OpenEye software, contact business@eyesopen.com.