You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-amino-3-methoxy-N-[2-[[(2S)-4-methyl-1-(2-methyloxiran-2-yl)-1-oxopentan-2-yl]amino]-2-oxoethyl]propanamide into molecular formula.
user
C15H27N3O5
assistant