You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6,8-dimethyl-N-[3-[(4-propan-2-yloxyphenyl)methylcarbamoyl]phenyl]-2,3-dihydropyrido[2,3-b][1,4]thiazine-1-carboxamide into molecular formula.
user
C27H30N4O3S
assistant