You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[2-[2-[[5,6-bis(prop-1-ynyl)-3-(2-sulfoethyl)-1,3-benzoxazol-2-ylidene]methyl]but-1-enyl]benzo[e][1,3]benzothiazol-1-ium-1-yl]propane-1-sulfonic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C34H33N2O7S3+
assistant