I believe 90 minutes is enough to catch your next flight, provided your first flight arrives on time. Since you won't be clearing immigartions (and this is where seriously long delays tend to happen), clearing security check shouldn't take you long: 5-10 minutes for that (unless you are unlucky to arrive after SU Shanghai flight lands; then it could take good 20-25 minutes). Walking between terminals is 10-15 minutes depending on your pace.
So with 90 minutes connection time and your flight arriving on shedule you will be at the gate 50-40 minutes before departure time (or 20-30 minutes before they open the gate). Quite enough to check out one of the infamous lounges in F.
On a positive note Wifi is free across Sheremetyevo and there are a couple of decent cafes; so if I were you I would spend $20 they charge for lounge access for a pint of ale in TGIF (in D) and sip at at the table as I surf Flyer Talk communities.

UPD: I have just realized you have an option of accessing Galaxy Lounge in E. Terminal E is halfway between F and D, so it could be a better option for you since (a) it is closer to your departure gates and (b) it is a nicer facility.