JvCake

function jvCake(classe) {
    const base16 = '0A12B34C56D78E9F';
    let lien = '';
    const s = classe.split(' ')[1];
    for (let i = 0; i < s.length; i += 2) {
        lien += String.fromCharCode(base16.indexOf(s.charAt(i)) * 16 + base16.indexOf(s.charAt(i + 1)));
    }
    return lien;
}

console.log(jvCake('JvCare 45CBCBC0C22D1F1FCCCCCC194D43C3C5C4464B434F19424F4E1FC0C14F4446481F484647434C4F4B2F4E4F4B432E4649444FC2'));