preferred_name: 2-hydroxyestrone + S-adenosyl-L-methionine => 2-methoxyestrone + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: 2-hydroxyestrone + s-adenosyl-l-methionine => 2-methoxyestrone + s-adenosyl-l-homocysteine + h(+)
label: 2-hydroxyestrone + S-adenosyl-L-methionine => 2-methoxyestrone + S-adenosyl-L-homocysteine + H(+)
label_lc: 2-hydroxyestrone + s-adenosyl-l-methionine => 2-methoxyestrone + s-adenosyl-l-homocysteine + h(+)