The Levofloxacin hydrochloride, with the CAS registry number 177325-13-2, is also known as (3S)-9-Fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid monohydrochloride. This chemical's molecular formula is C₁₈H₂₀FN₃O₄·HCl and molecular weight is 397.83. What's more, its systematic name is called (3S)-9-Fluoro-3-methyl-10-(4-methylpiperazin-1-yl)-7-oxo-2,3-dihydro-7H-[1,4]oxazino[2,3,4-ij]quinoline-6-carboxylic acid hydrochloride.

Physical properties about Levofloxacin hydrochloride are: (1)ACD/LogP: 0.84; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1; (4)ACD/LogD (pH 7.4): -1; (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: 7; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 62.32 Å²; (13)Flash Point: 299.4 °C; (14)Enthalpy of Vaporization: 90.15 kJ/mol; (15)Boiling Point: 571.5 °C at 760 mmHg; (16)Vapour Pressure: 6.7E-14 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1) SMILES: Cl.Fc4cc1c2N(/C=C(\C1=O)C(=O)O)[C@H](COc2c4N3CCN(C)CC3)C
(2) InChI: InChI=1S/C18H20FN3O4.ClH/c1-10-9-26-17-14-11(16(23)12(18(24)25)8-22(10)14)7-13(19)15(17)21-5-3-20(2)4-6-21;/h7-8,10H,3-6,9H2,1-2H3,(H,24,25);1H/t10-;/m0./s1
(3) InChIKey: CAOOISJXWZMLBN-PPHPATTJSA-N