You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-O-[3-ethoxy-2-(ethylcarbamoyloxy)propyl] 4-O-[(3-ethyloxetan-3-yl)methyl] (E)-but-2-enedioate;1-O-(3-ethoxy-2-hydroxypropyl) 4-O-[(3-ethyloxetan-3-yl)methyl] (E)-but-2-enedioate;isocyanatoethane is the IUPAC name of a molecule. Please give its molecular formula.
user
C36H58N2O16
assistant