... > chemical entity > group > anionic group > organic anionic group > anionic amino-acid residue > O-(S-acylpantetheine-4'-phosphoryl)serine(1-) residue > O-(S-3-oxoacylpantetheine-4'-phosphoryl)-L-serine(1-) residue > O-(S-3-oxo-4-methylhexanoylpantetheine-4'-phosphoryl)serine(1-) residue > O{S-[(4S)-4-methyl-3-oxohexanoyl]pantetheine-4'-phosphoryl}serine(1-) residue