Ageratochromen dimer | Ageratochromene low-melting dimer | 3',4'-Dihydro-6,6',7,7'-tetramethoxy-2,2,2',2'-tetramethyl-3,4'-bi-2H-1-benzopyran | 2,2,2',2'-Tetramethyl-6,6',7,7'-tetramethoxy-3',4'-dihydro-3,4'-bi[2H-1-benzopyran] | 3',4'-Dihydro-6,6',7,7'-tetramethoxy-2,2,2',2'-tetramethyl-3,4'-bi-(2H-1-benzopyran) | 3-[3,4-Dihydro-6,7-dimethoxy-2,2-dimethyl-2H-1-benzopyran-4-yl]-6,7-dimethoxy-2,2-dimethyl-2H-1-benzopyran |
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