ECO B49: Sicilian Defense

ECO B49 is part of volume B — Semi-Open Games. The Lichess chess-openings dataset files one named line under it. It is Sicilian Defense: Taimanov Variation, Bastrikov Variation: 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be3 a6 7. Be2.

That position has come up in 302,138 Lichess games between players rated 1600 to 2500: White won 43.8%, 5.3% were drawn and Black won 50.9%.