ECO B61: Sicilian Defense
ECO B61 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, Modern Variation:
1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bg5 Bd7 7. Qd2.
That position has come up in 40,760 Lichess games between players rated 1600 to 2500: White won 47.1%, 7.4% were drawn and Black won 45.4%.