You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (4S)-4-[bis[(2-methylpropan-2-yl)oxycarbonyl]amino]-5-oxo-5-(1,3-thiazolidin-3-yl)pentanoic acid ?
user
C18H30N2O7S
assistant