151271-54-4 2(3H)-Furanone, 5-(3-acetyl-2,6-dihydroxyphenyl)dihydro-3-methoxy-, (3R-trans)- 4-(3-Acetyl-2,6-dihydroxyphenyl)-2-methoxy-4-butanolide Antafumicin A Antafumicin B