ECO B66: Sicilian Defense

ECO B66 is part of volume B — Semi-Open Games. The Lichess chess-openings dataset files one named line under it. It is Sicilian Defense: Richter-Rauzer Variation, Neo-Modern Variation, Early Deviations: 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 a6.

That position has come up in 150,852 Lichess games between players rated 1600 to 2500: White won 47.2%, 6.8% were drawn and Black won 46.0%.