BEGIN:VCALENDAR VERSION:2.0 PRODID:-//hacksw/handcal//NONSGML v1.0//EN TZ:+00 BEGIN:VEVENT DTSTART:20250923T000000Z DTEND:20250925T000000Z SUMMARY:Beilstein Organic Chemistry Symposium 2025: Organic Semiconductor Materials: Challenges and Opportunities starts on the 23rd September 2025 LOCATION:Lindner Hotel Frankfurt Hochst,Frankfurt am Main,Germany END:VEVENT END:VCALENDAR