3H-Bis(1)benzopyrano(3,4-b:6',5'-e)pyran-7(7aH)-one, 13,13a-dihydro-7a-hydroxy-9,10-dimethoxy-3,3-dimethyl-, (7aR,13aR)- 3H-Bis(1)benzopyrano(3,4-b:6',5'-e)pyran-7(7aH)-one, 13,13a-dihydro-7a-hydroxy-9,10-dimethoxy-3,3-dimethyl-, (7aR-cis)- 76-80-2 CCRIS 7115 Tephrosin