berberine herbal medicine molecule. 3d rendering. atoms are represented as spheres with conventional color coding: hydrogen white

berberine herbal medicine molecule 3d rendering atoms are represented as spheres conventional color coding hydrogen white berberin quaternary ammonium isoquinoline alkaloid berberis grape barberry antimicrobial yellow dye stain staining antibiotic traditional diabetes dipeptidyl peptidase dpp4 cholesterol cancer tumor antidepressant carbon nitrogen oxygen atomic model molecular compound composition chemical chemistry science scientific grey blue red