You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named ethyl 4-[2-[cyclopropanecarbonyl(oxolan-2-ylmethyl)amino]propanoyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C21H30N2O5
assistant