65386-83-6 Afb1-fap Aflatoxin B1-formamidopyrimidine Formamide, N-(2,6-diamino-1,4-dihydro-4-oxo-5-pyrimidinyl)-N-(1,2,3,6a,8,9,9a,11-octahydro-9-hydroxy-4-methoxy-1,11-dioxocyclopenta(c)furo(3',2':4,5)furo(2,3-h)(1)benzopyran-8-yl)-, (6aS-(6aalpha,8beta,9alpha,9aalpha))-