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(+) => theobromine + s-adenosyl-l-methionine