You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,4S,16R,17S,18S)-18-butyl-7-hydroxy-8-methoxy-17-pentyl-4-phenyltricyclo[14.5.0.05,10]henicosa-5,7,9-trien-2-yne-13,15-dione by IUPAC nomenclature, provide its molecular formula.
user
C37H48O4
assistant