You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[4-[3,6-bis[ethyl(methyl)amino]-9H-xanthen-9-yl]-2-[2-[2-[2-[bis(2-methoxy-2-oxoethyl)amino]phenoxy]ethoxy]ethoxy]-N-(2-methoxy-2-oxoethyl)anilino]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C47H58N4O12
assistant