My immediate guess is Boise Torride. The vial sounds like standard Guerlain, so no help there. Boise Torride is an amazing gourmand, but not overly, very unisex, with shades of Obsession (all versions). It's an FB contender for me. Tiny bit feminine, but easily wearable by a guy (my wife did not question gender when I wore my sample, which she does when things get too obviously white floral). I thought it was awesome stuff.
Edit: Just rechecked the top notes. Sweet and somewhat almondy / liqueuerish. I'm sticking with BT as my guess.
More Opinion: Totally underrated. I think Boise Torride is one of the classiest, sexiest gourmands out there. It's good stuff - very Guerlain, a bit on the modern side. It does have that same richness as Amouage, but keeps the Guerlain distinction (which in this case is less "guerlinade" and more "typical modern Guerlain femme gourmand whatever"), without being borderline cloying, which some Guerlain feminines are for me.