The Cyclouridine, with the CAS registry number 3736-77-4 and EINECS registry number 223-107-6, has the IUPAC name of (2R,3R,3aS,9aR)-3-hydroxy-2-(hydroxymethyl)-2,3,3a,9a-tetrahydro-6H-furo[2',3':4,5][1,3]oxazolo[3,2-a]pyrimidin-6-one. It belongs to the following product categories: Heterocyclic Compounds; Biochemistry; Nucleosides, Nucleotides & Related Reagents; Building Blocks; Heterocyclic Building Blocks; Pyrimidines. And the molecular formula of the chemical is C₉H₁₀N₂O₅. What's more, it is always used as a tool in anti-cancer and anti-virus field.

The physical properties of Cyclouridine are as followings: (1)ACD/LogP: -1.40; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 7; (4)#H bond donors: 2; (5)#Freely Rotating Bonds: 3; (6)Polar Surface Area: 69.59 Å²; (7)Index of Refraction: 1.815; (8)Molar Refractivity: 48.71 cm³; (9)Molar Volume: 112.3 cm³; (10)Polarizability: 19.31×10^-24cm³; (11)Surface Tension: 90.7 dyne/cm; (12)Density: 2.01 g/cm³; (13)Flash Point: 229.8 °C; (14)Enthalpy of Vaporization: 82.62 kJ/mol; (15)Boiling Point: 456.3 °C at 760 mmHg; (16)Vapour Pressure: 3.04E-10 mmHg at 25°C.

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Avoid contact with skin and eyes. Wear suitable protective clothing, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice. 

You can still convert the following datas into molecular structure:
(1)SMILES: O=C/1/N=C2/O[C@H]3[C@H](O)[C@H](O[C@H]3N2\C=C\1)CO
(2)InChI: InChI=1/C9H10N2O5/c12-3-4-6(14)7-8(15-4)11-2-1-5(13)10-9(11)16-7/h1-2,4,6-8,12,14H,3H2/t4-,6-,7+,8-/m1/s1
(3)InChIKey: UUGITDASWNOAGG-CCXZUQQUBP