... > chemical entity > group > anionic group > organic anionic group > anionic amino-acid residue > O-(S-acylpantetheine-4'-phosphoryl)serine(1-) residue > O-[S-(2E)-2-enoylpantetheine-4'-phosphoryl]-L-serine(1-) residue > O-[S-(2E,5Z,21Z-tetracontatrienoylpantetheine)-4'-phosphoryl]-L-serine(1-) residue