label: (E)-2-(methoxycarbonylmethyl)but-2-enedioate + S-adenosyl-L-homocysteine => trans-aconitate + S-adenosyl-L-methionine
label_lc: (e)-2-(methoxycarbonylmethyl)but-2-enedioate + s-adenosyl-l-homocysteine => trans-aconitate + s-adenosyl-l-methionine