The word "cimolian" is not listed in any major dictionaries, indicating that it is possibly a misspelling or a word in limited use. However, if we break the word down phonetically using IPA transcription, we get /sɪˈmoʊli.ən/. This suggests that it is pronounced with a short "i" sound, followed by a stressed "mo" and a schwa sound in the third syllable. The last syllable is pronounced with an "ən" ending, similar to the word "comedian." Nevertheless, it is advisable to confirm the intended spelling of the word before using it in any formal contexts.
Pert. to.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.