Complex sentence: Around 1700, an apprentice chemist with the pharmacist Zorn in Berlin, he locked himself up to discover in private the "Alltinktur", a substance with which any disease could be cured and base metals converted into gold.
Split into simpler sentences: Around 1700, an apprentice chemist with the pharmacist Zorn in Berlin, he locked himself up to discover in private the "Alltinktur". With it any disease could be cured and base metals converted into gold.