[H]C(=C(N)C(C)=C(C=C)C(O)=O)C1=C(C)C(CCC(O)=O)=C(CC2=C(CCC(O)=O)C(C)=C(N2)C(\[H])=C2/N=C(O)C(C)=C2C=C)N1