[(1S,2R,11R)-1,2,5-trimethylspiro[8-oxatricyclo[7.2.1.02,7]dodec-5-ene-12,2'-oxirane]-11-yl] acetate
Antifungal metabolite from several fungi, mainly Trichoderma viride; inhibits protein synthesis by binding to ribosomes; proposed as antifungal and antineoplastic; used as tool in cellular biochemistry.