IUPAC:2,4',5,10'-tetrahydroxy-4,6,6',11'-tetramethyl-8',10-dioxo-10H-spiro[anthracene-9,14'-tetracyclo[7.7.1.0^{2,7}.0^{13,17}]heptadecane]-1'(16'),2',4',6',9'(17'),10',12'-heptaene-3,5'-dicarboxylic acid
IUPAC:2,4',5,10'-tetrahydroxy-4,6,6',11'-tetramethyl-8',10-dioxo-10H-spiro[anthracene-9,14'-tetracyclo[7.7.1.0^{2,7}.0^{13,17}]heptadecane]-1'(16'),2',4',6',9'(17'),10',12'-heptaene-3,5'-dicarboxylic acid