You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7S)-3-amino-5-(2,6-dichlorobenzoyl)oxy-7-[(1,3-dimethylindole-2-carbonyl)amino]-8-methyl-4,6-dioxononanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H29Cl2N3O7
assistant