You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[2-[(4S,5S)-4-(5-cyclobutyl-4-hydroxy-4-methylpent-1-enyl)-5-methyl-2-oxo-1,3-oxazolidin-3-yl]ethylsulfanyl]-1,3-thiazole-4-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H28N2O5S2
assistant