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system
Provide the molecular formula for the IUPAC named substance 4-[2-[(E)-[7-[(Z)-(3-ethylbenzo[f][1,3]benzothiazol-2-ylidene)methyl]-4,4a,5,6-tetrahydro-3H-naphthalen-2-ylidene]methyl]benzo[f][1,3]benzothiazol-3-ium-3-yl]butane-1-sulfonate .
user
C40H38N2O3S3
assistant