You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[(3R)-3-methyl-1,1-dioxothiolan-3-yl]-3-[6-[[(3R)-3-methyl-1,1-dioxothiolan-3-yl]carbamothioylamino]hexyl]thiourea .
user
C18H34N4O4S4
assistant