Best Move (5)

In the diagram below Black's position seems to be very powerful. White to move by all means needs an idea in Vachier-Lagrave - Savchenko, B. (Moscow 2010). What is the best move to play?

How it was continued: 1.Bxe5+ dxe5 2.Qxe5+ Kg8 3.Rxf7! (-> Qg7#) Kxf7 4.Qf6+ Kg8 with perpetual check since the black king cannot cross the c-file because of Rxc2+, thus 1/2-1/2

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