You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule ethane;1-methyl-2-[(3E)-3-methyl-4-phenylpenta-1,3-dien-2-yl]benzene;2-methyl-1-(2-methylphenyl)-3-phenyl-5-[3-[(2Z,4E)-5-[3-(3-prop-1-en-2-ylphenyl)phenyl]hepta-2,4,6-trienyl]phenyl]benzene .
user
C71H74
assistant