You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
but-2-enedioic acid;16,17-dimethoxy-6-propan-2-yl-2,7,20-trioxapentacyclo[11.8.0.03,11.04,8.014,19]henicosa-3(11),4(8),9,14,16,18-hexaen-12-one;1-methyl-4-thioxanthen-9-ylidenepiperidine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C46H47NO10S
assistant