7-{14-[(8Z)-8-(aminomethylidene)-1,6-dihydroxy-3-methyl-5-(1-methylethyl)-7-oxo-7,8-dihydronaphthalen-2-yl]-2,10-dihydroxy-5,13-dimethyl-3,11-bis(1-methylethyl)-1,9-dioxo-1H,9H-8,16-epiminodinaphtho[1,8-bc:1',8'-gh][1,6]dioxecin-6-yl}-2,3,8-trihydroxy-6-m