objc:objc-class-name

(objc:objc-class-name class)

The name of a class, the inverse of objc:coerce-to-objc-class. Part of the macOS-only objc package -- the interpreter (java -jar, or the rontolisp native binary), a compiled .class / .jar and a --native executable for macOS on Apple silicon, never a .wasm; on a machine without the runtime it signals an error. See the macOS GUI guide.

CL-USER> (objc:objc-class-name (objc:invoke *s* "class"))
"__NSCFString"