Collagen Molecule simulation in GEANT4

Hello Everyone
Hope all of you are doing well.
I’m new in GEANT4 and doing simulation on PDB4DNA collagen molecule. I did the simulation and got number of DSB and DSB in Root analysis but I got stuck at one point. I need to show exactly which bonds breaks in the simulation of collagen molecule also I need to show is any hydroxyl bond exist in collagen molecule. I tried but didn’t find any way to show this.
Could anyone please help me by telling how I can show exactly which bonds break in the simulation of collagen molecule in GEANT4 and any is hydroxyl bond exist in collagen molecule?

Thanks.