You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
but-1-ene;ethylbenzene;methanethiol;(12Z,14Z)-11-methylidene-16-[4-[3-phenyl-5-(4-phenylphenyl)phenyl]pyrimidin-2-yl]-16-azatricyclo[8.6.0.02,7]hexadeca-1(10),2,4,6,8,12,14-heptaene is the IUPAC name of a molecule. Please give its molecular formula.
user
C57H53N3S
assistant