viridin antibiotic is effective against\tbacteria\tfungi\tgram positive bacteria\tgram negative bacteria

The correct option is 2.
A rhodium-catalyzed alkyne cyclotrimerization, domino electrocyclic reactions, and a hydroxy-directed dihydroxylation are key steps in an efficient synthesis of the bioactive furanosteroid viridin (1) from a simple acyclic triyne.