You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-(3-chlorophenyl)-3-(3-methoxy-4-propoxyphenyl)-1-[4-(3,4,5-trimethoxybenzoyl)piperazin-1-yl]prop-2-en-1-one by IUPAC nomenclature, provide its molecular formula.
user
C33H37ClN2O7
assistant