Isogibberellin A3

Isogibberellic acid

2β,3α,7-Trihydroxy-1-methyl-8-methylenegibb-4-ene-1α,10β-dicarboxylic acid 1,3-lactone

(4bβ)-1-Methyl-2β,3α,7-trihydroxy-8-methylenegibba-4-ene-1α,10β-dicarboxylic acid 1,3-lactone