You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (E,3S)-3-[[(R)-tert-butylsulfinyl]amino]-3-methyl-5-(5-prop-1-ynylpyridin-3-yl)pent-4-enoic acid .
user
C18H24N2O3S
assistant