This chemical is called Magnesium,bromopentadecyl-, and its CAS registry number is 78887-70-4. With the molecular formula of C₁₅H₃₁BrMg, its molecular weight is 315.62. Additionally, its product categories are Classes of Metal Compounds; Grignard Reagents & Alkyl Metals; Mg (Magnesium) Compounds; Synthetic Organic Chemistry; Typical Metal Compounds; Organometallic Reagents. 

Other characteristics of the Magnesium,bromopentadecyl- can be summarised as followings: (1)#H bond acceptors: 0; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 14.

Uses of this chemical: The Magnesium,bromopentadecyl- could react with (E)-2-(1-octenyl)-1,3,2-dioxaborinane, and obtain the (Z)-tricos-7-ene. This reaction needs the reagents of I₂, NaOH, and the solvents of diethyl ether, methanol. The yield is 84 %. In addition, this reaction should be taken for 15 minutes at the temperature of 20 °C.

When you are using this chemical, please be cautious about it as the following: This chemical is harmful to eyes, respiratory system and skin. It causes burns. You should wear suitable protective clothing if you use it. In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice. As it's flammable, keep it away from the sources of ignition.

You can still convert the following datas into molecular structure: 
1.SMILES: Br[Mg]CCCCCCCCCCCCCCC
2.InChI: InChI=1/C15H31.BrH.Mg/c1-3-5-7-9-11-13-15-14-12-10-8-6-4-2;;/h1,3-15H2,2H3;1H;/q;;+1/p-1/rC15H31BrMg/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-17-16/h2-15H2,1H3
3.InChIKey: NNIBYWYQYUJVFG-JIJWSTBDAG