You can find also an N1—H1⋯O4 hydrogen bond involving the indole nitrogen and another oxygen of the carboxylate team on the symmetry-created fumarate dianion (Table two DISCLAIMER: PW's dosage facts is gathered from end users and means for educational uses only. It's not a suggestion and may be confirmed with https://5-meo-daltfreebase02479.wikipresses.com/4210048/about_5_meo_dalt_freebase