You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
11-(4-dodecylphenyl)-7,15-bis(3-hexylthiophen-2-yl)-3,19-dithia-11-azapentacyclo[10.7.0.02,10.04,9.013,18]nonadeca-1(12),2(10),4(9),5,7,13(18),14,16-octaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C54H65NS4
assistant