[Open Babel] Smarts -> setting flag for exocyclic bonds / parse structure "as it is"

[Florian K. <flo...@tu...>]

Hi there!

In my smarts patterns  I want to find aromatic rings but no
hydrochinons, uracils or anything that contains exocyclic double bonds.

Is there any flag for using the pybel.Smarts that omits thoses
structural elements and tautomeric forms to be found aromatic ?
How can I detect aromatic smarts [a] on a structure "as-it-is"?

Thanx alot!

Florian