label: 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d + S-adenosyl-L-homocysteine + H(+) => 8,12-diethyl-3-vinylbacteriochlorophyllide d + S-adenosyl-L-methionine
label_lc: 12-ethyl-8-propyl-3-vinylbacteriochlorophyllide d + s-adenosyl-l-homocysteine + h(+) => 8,12-diethyl-3-vinylbacteriochlorophyllide d + s-adenosyl-l-methionine