(7,7'-Bi-4aH-xanthene)-4a,4'a-dicarboxylic acid, 2,2',3,3',4,4',9,9'-octahydro-1,1',4,4',8,8'-hexahydroxy-3,3'-dimethyl-9,9'-dioxo-, dimethyl ester, (3S-(3-alpha,4-beta,4a-beta,7(3'R,4'S,4'aS))) 35287-69-5 CCRIS 4937 Ergochrome AA (2,2')-5-beta,6-alpha,10-beta-5',6'-alpha,10'-beta NSC 159631 SAD SECALONSAURE D Secalonic acid D Secalonic acid D mycotoxin