Known filenames:
refinedstorage-1.4.20.jar
MC1.11.2_RefinedStorage_v1.4.20.jar
RefinedStorage-1.11.2.jar
Refined Storage [1.4.20].jar
refinedstorage-1.4.20 1.11.2.jar
refinedstorage-1.4.20.disabled.jar
refinedstorage-1.4.20 (1).jar
Refined Storage 1.4.20.jar
Refined Storage.jar