You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by 2-[4,5-dibutoxy-6-(butoxymethyl)-2-phenylsulfanyloxan-3-yl]oxy-4-methylidene-1,3,2lambda5-dioxaphosphinane 2-oxide ?
user
C28H45O8PS
assistant