The scene is a laboratory interior located in Sofia, Bulgaria

The scene is a laboratory interior located in Sofia, Bulgaria. The immediate foreground shows a blue laminate tabletop with two parallel silver-colored rails. On the left, a clear glass reagent bottle contains a clear liquid, labeled in Bulgarian, English, and Latin as "ПРЕЧИСТЕНА ВОДА," "PURIFIED WATER," and "AQUA DESTILLATA." To the right, a circular, multi-tiered grey metal stand displays multiple reagent bottles. Prominent labels include "БИКАРБОНАТ," "HYDROGEN CARBONATE," and "HYDROCARBONAS" on a clear bottle containing white powder, and "НАТРИЕВ САЛИЦИЛАТ," "SODIUM SALICYLATE," and "NATRII SALICYLIS" on an amber bottle containing brown/tan powder. Another clear bottle, partially obscured, is labeled "НАТРИ..." (Natrii...). The blurred background reveals a light-colored laboratory environment with several individuals, likely students or lab personnel, wearing white lab coats. They are observed standing or moving around various laboratory benches, with additional shelving and equipment visible.