label: iron-3,3,6,6,9,9-hexamethyl-3,4,8,9-tetrahydro-1H-1,4,8,11-benzotetraazacyclotridecine-2,5,7,10(6H,11H)-tetraone
label_lc: iron-3,3,6,6,9,9-hexamethyl-3,4,8,9-tetrahydro-1h-1,4,8,11-benzotetraazacyclotridecine-2,5,7,10(6h,11h)-tetraone