You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 1-[5-[(1S,3R)-3-[(5-amino-1,3,4-thiadiazol-2-yl)methyl]cyclopentyl]-1,3,4-thiadiazol-2-yl]-3-phenylpropan-2-one into its molecular formula.
user
C19H21N5OS2
assistant