The proper noun "Carol Botwin" is spelled using the International Phonetic Alphabet (IPA) as /ˈkærəl ˈbɑːtwɪn/. The first syllable, "carol," is pronounced with a short 'a' sound followed by an 'o' sound, while the second syllable, "Botwin," is pronounced with a long 'o' sound. The 't' and 'w' sounds in "Botwin" are pronounced individually, with a slight pause between them. The IPA provides a standardized way to represent the sounds of words, making it useful for language learners and linguists.