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 (2R)-1-[4-(furan-2-carbonyl)piperazin-1-yl]-2-[(2-methyl-1,3-benzothiazol-6-yl)amino]propan-1-one ?
user
C20H22N4O3S
assistant