IUPAC:(3S,4S)-5-[(3S,4S)-4,10-dihydroxy-7,9-dimethoxy-3-methyl-1H,3H,4H-naphtho[2,3-c]pyran-5-yl]-7,9-dimethoxy-3-methyl-1H,3H,4H-naphtho[2,3-c]pyran-4,10-diol
IUPAC:(3S,4S)-5-[(3S,4S)-4,10-dihydroxy-7,9-dimethoxy-3-methyl-1H,3H,4H-naphtho[2,3-c]pyran-5-yl]-7,9-dimethoxy-3-methyl-1H,3H,4H-naphtho[2,3-c]pyran-4,10-diol