(2s,3s,4s,6r)-6-{8-[(2r,4r,5s,6r)-4-(dimethylammonio)-5-hydroxy-6-methyltetrahydro-2h-pyran-2-yl]-2-[(2s,2'r,3r,3's)-3,3'-dimethyl-2,2'-bioxir-3-yl]-11-hydroxy-5-methyl-4,7,12-trioxo-7,12-dihydro-4h-naphtho[2,3-h]chromen-10-yl}-3-hydroxy-n,n,2,4-tetramethyltetrahydro-2h-pyran-4-aminium