You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-thiophen-3-ylethyl 4-(20-phenyl-20-heptadecacyclo[19.16.0.02,18.04,37.05,35.08,34.09,32.011,31.012,29.015,28.016,19.017,19.017,27.022,26.023,36.024,33.025,30]heptatriaconta-6,9,12(29),15(28),21,23(36),24(33),25(30),26-nonaenyl)butanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C53H40O2S
assistant