The molecule is a methoxyisoflavan that is isoflavan substituted by a hydroxy group at position 2', methoxy groups at positions 6 and 3', a 2-carboxyethenyl group at position 5' and a sulfoxy group at position 4. It is an organic sulfate, a sulfuric ester, an alpha,beta-unsaturated monocarboxylic acid, a methoxyisoflavan and a member of hydroxyisoflavans. It is a conjugate acid of a torvanol A(1-).
(E)-3-[4-hydroxy-3-methoxy-5-[(3R,4S)-6-methoxy-4-sulfooxy-3,4-dihydro-2H-chromen-3-yl]phenyl]prop-2-enoic acid