You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 1-ethyl-2-[(4-methyl-2-propan-2-yloxyphenyl)methyl]-3-[3-(2-oxopyrrolidin-1-yl)pentyl]guanidine ?
user
C23H38N4O2
assistant