This chemical is called L-Ascorbic acid, monooctadecanoate, and its CAS registry number is 25395-66-8. With the molecular formula of C₂₄H₄₂O₇, its molecular weight is 442.59. Please avoid contacting with skin and eyes if you use it.

Other characteristics of the L-Ascorbic acid, monooctadecanoate can be summarised as followings: (1)ACD/LogP: 7.13; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.86; (4)ACD/LogD (pH 7.4): 4.14; (5)ACD/BCF (pH 5.5): 8315.4; (6)ACD/BCF (pH 7.4): 158.48; (7)ACD/KOC (pH 5.5): 9713.45; (8)ACD/KOC (pH 7.4): 185.13; (9)#H bond acceptors: 7; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 23; (12)Polar Surface Area: 113.29 Å²; (13)Index of Refraction: 1.516; (14)Molar Refractivity: 118.89 cm³; (15)Molar Volume: 393.2 cm³; (16)Polarizability: 47.13×10^-24cm³; (17)Surface Tension: 48.9 dyne/cm; (18)Density: 1.125 g/cm³; (19)Flash Point: 168.5 °C; (20)Enthalpy of Vaporization: 93.45 kJ/mol; (21)Boiling Point: 536 °C at 760 mmHg; (22)Vapour Pressure: 1.01E-13 mmHg at 25°C.

You can still convert the following datas into molecular structure:
1.SMILES: OC=1C(OC(=O)C=1O)C(O)COC(=O)CCCCCCCCCCCCCCCCC
2.InChI: InChI=1/C24H42O7/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-20(26)30-18-19(25)23-21(27)22(28)24(29)31-23/h19,23,25,27-28H,2-18H2,1H3
3.InChIKey: LITUBCVUXPBCGA-UHFFFAOYAI