preferred_name: a tertiary amine + S-adenosyl-L-methionine <=> a methylated tertiary amine + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: a tertiary amine + s-adenosyl-l-methionine <=> a methylated tertiary amine + s-adenosyl-l-homocysteine + h(+)
label: a tertiary amine + S-adenosyl-L-methionine <=> a methylated tertiary amine + S-adenosyl-L-homocysteine + H(+)
label_lc: a tertiary amine + s-adenosyl-l-methionine <=> a methylated tertiary amine + s-adenosyl-l-homocysteine + h(+)