ECO D62: Queen's Gambit Declined

ECO D62 is part of volume D — Closed & Semi-Closed Games. The Lichess chess-openings dataset files one named line under it. It is Queen's Gambit Declined: Orthodox Defense, Rubinstein Variation, Flohr Line: 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7 7. Qc2 c5 8. cxd5.

That position has come up in 8,338 Lichess games between players rated 1600 to 2500: White won 49.4%, 7.8% were drawn and Black won 42.8%.