1 SDN [(3s)-9-hydroxy-1-methyl-10-oxo-4,10-dihydro-3h-benzo[G]isochromen-3-yl]acetic acid 1.000 2 OAL (1,8-dihydroxy-9,10-dioxo-9,10-dihydro-anthracen-2-yl)-acetic acid 0.720