title: The PubChem chemical structure sketcher.
authors.affiliation: National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Department of Health and Human Services, 8600 Rockville Pike, Bethesda, MD 20894, USA. bryant@ncbi.nlm.nih.gov.
authors.forename: Wolf D
authors.initials: WD
authors.lastname: Ihlenfeldt
authors.forename: Evan E
authors.initials: EE
authors.lastname: Bolton
authors.forename: Stephen H
authors.initials: SH
authors.lastname: Bryant