label: N(6),N(6)-dimethyl-L-lysyl(4)-[histone H3] + formaldehyde + succinate + CO2 => N(6),N(6),N(6)-trimethyl-L-lysyl(4)-[histone H3] + 2-oxoglutarate + O2
label_lc: n(6),n(6)-dimethyl-l-lysyl(4)-[histone h3] + formaldehyde + succinate + co2 => n(6),n(6),n(6)-trimethyl-l-lysyl(4)-[histone h3] + 2-oxoglutarate + o2