You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance potassium;1-[(5-chloro-1H-indole-2-carbonyl)amino]-3-hydroxy-2,2-dimethylcyclobutane-1-carboxylate .
user
C16H16ClKN2O4
assistant