Given that the entire ~accusation~ actionable libel seems to be a bizarre game of telephone derived from a 2013 news item in which Eric Schmidt paid roughly half that amount for a NY penthouse, specifically one muckraker’s tabloid variant that vaguely connected Schmidt to two very definitely not 18 also very definitely not prostitutes, and that the only detail that appears remotely correct is that he did indeed have the property soundproofed, I very much doubt you’ll get that substantiation.