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 (5Z)-5-(1,3-benzothiazol-6-ylmethylidene)-2-[[(1S,2S)-2-hydroxy-2,3-dihydro-1H-inden-1-yl]imino]-3-methylimidazolidin-4-one ?
user
C21H18N4O2S
assistant