theobromine + S-adenosyl-L-methionine => caffeine + S-adenosyl-L-homocysteine + H(+)
theobromine + s-adenosyl-l-methionine => caffeine + s-adenosyl-l-homocysteine + h(+)
theobromine + S-adenosyl-L-methionine => caffeine + S-adenosyl-L-homocysteine + H(+)
theobromine + s-adenosyl-l-methionine => caffeine + s-adenosyl-l-homocysteine + h(+)