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The title compound, C 26 H 26 N 4 O 6 ·2C 4 H 8 O, representing a bis-urea with terminal phenylalanine units, crystallized with two tetrahydrofuran (THF) molecules. The main molecule is located on a crystallographic twofold axis, while the solvent molecule is disordered over two positions, with occupancies of 0.571 (15) and 0.429 (15). The host molecules are linked by N—H...O=C hydrogen bonds and C—H...O contacts with R 21 (6) and R 21 (7) ring motifs. The THF molecules enclosed in the crystal are connected to the bis-urea compound via O—H...O and C—H...O interactions.
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