You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3-amino-8-thia-4,6-diazatricyclo[7.5.0.02,7]tetradeca-1(9),2,4,6-tetraen-5-yl)methyl 3-(furan-2-carbonylamino)propanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H22N4O4S
assistant