The Benzeneacetic acid, α-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-,(R)- (9CI), with the CAS registry number 63422-71-9, is also known as (R)-(-)-alpha-[[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]benzeneacetic acid. It belongs to the product categories of Pharmaceutical Intermediates; Chiral Building Blocks; Heterocyclic Building Blocks; Piperazines. Its EINECS number is 264-133-8. This chemical's molecular formula is C₁₅H₁₇N₃O₅ and formula weight is 319.31. What's more, its IUPAC name is (2R)-2-[(4-ethyl-2,3-dioxopiperazine-1-carbonyl)amino]-2-phenylacetic acid. This chemical is used as the side chain intermediates of the third generation of piperacillin. 

Physical properties of Benzeneacetic acid, α-[[(4-ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-,(R)- (9CI) are: (1)ACD/LogP: 1.54; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.85; (4)ACD/LogD (pH 7.4): -2.11; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 8; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 87.23 Å²; (13)Index of Refraction: 1.594; (14)Molar Refractivity: 78.65 cm³; (15)Molar Volume: 231.7 cm³; (16)Surface Tension: 62.3 dyne/cm; (17)Density: 1.377 g/cm³.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Besides, you should wear suitable protective clothing and suitable gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: CCN1CCN(C(=O)C1=O)C(=O)NC(C2=CC=CC=C2)C(=O)O
(2)Isomeric SMILES: CCN1CCN(C(=O)C1=O)C(=O)N[C@H](C2=CC=CC=C2)C(=O)O
(3)InChI: InChI=1S/C15H17N3O5/c1-2-17-8-9-18(13(20)12(17)19)15(23)16-11(14(21)22)10-6-4-3-5-7-10/h3-7,11H,2,8-9H2,1H3,(H,16,23)(H,21,22)/t11-/m1/s1
(4)InChIKey: JQEHQELQPPKXRR-LLVKDONJSA-N