You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 3-[2-(2-chlorophenothiazin-10-yl)-2-oxoethyl]-5-(2-methyl-3-phenylprop-2-enylidene)-2-sulfanylidene-1,3-thiazolidin-4-one .
user
C27H19ClN2O2S3
assistant