BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20220221T000000Z DTEND:20220221T000000Z SUMMARY:4th Oldenburg Symposium on Chemical Bond Activation: Poster abstract deadline due before 21st February 2022 LOCATION: END:VEVENT END:VCALENDAR