You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[[1-(2-methoxyethyl)cyclopentyl]methyl]-2-methyl-3-[(3-morpholin-4-ylthiolan-3-yl)methyl]guanidine .
user
C20H38N4O2S
assistant