C30 botryococcene + S-adenosyl-L-methionine = 20-methyl-21,22-didehydro-20,21-dihydrobotryococcene + S-adenosyl-L-homocysteine + H(+)
c30 botryococcene + s-adenosyl-l-methionine = 20-methyl-21,22-didehydro-20,21-dihydrobotryococcene + s-adenosyl-l-homocysteine + h(+)
C30 botryococcene + S-adenosyl-L-methionine = 20-methyl-21,22-didehydro-20,21-dihydrobotryococcene + S-adenosyl-L-homocysteine + H(+)
c30 botryococcene + s-adenosyl-l-methionine = 20-methyl-21,22-didehydro-20,21-dihydrobotryococcene + s-adenosyl-l-homocysteine + h(+)