You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 2-[3-[[2-[ethyl(methyl)amino]-2-oxoethyl]amino]-1-[(2-methylpropan-2-yl)oxycarbonyl]azetidin-3-yl]acetic acid ?
user
C15H27N3O5
assistant