mol2nam
is able to convert 221205 structures (88.39%) to names without BLAH.
Of these 221205 names, nam2mol is able to convert 183444 (82.93%)
back into structures.
The major announcement of this release is the support for stereochemistry in compound naming. The CIP rules for assigning R/S descriptors to tetralhedral chiral centers, and E/Z descriptors to double bonds are used during name generation.