  We consider a 3rd-order generalized Monge-Ampere equation u_yyy - u_xxy^2 +
u_xxx u_xyy = 0 (which is closely related to the associativity equation in the
2-d topological field theory) and describe all integrable structures related to
it (i.e., Hamiltonian, symplectic, and recursion operators). Infinite
hierarchies of symmetries and conservation laws are constructed as well.
