Explanations:- Looking at the given name, the parent chain name is Oct and Oct stands for eight carbons.
The suffix -ene at number 5 stands for a double bond between carbon number 5 and 6.
Bro stands for Br. Since the name has dibromo means there are two Br at number 3 and 7 carbons.
Similarly, there are two Cl at number 4 and 6 carbons.
Suffix -ol is used for OH group. The given name has 1,2-diol means there are two OH groups at number 1 and 2 carbons.
So, to draw the structure of the compound we put 8 carbons in a chain and then but a double bond between number 5 and 6 carbons. Put OH at number 1 and 2 carbons, put Br at number 3 and 7 carbons and Cl at number 4 and 6 carbons. If any of the carbons octet (four bonds) is still incomplete then we attach H atoms to it.
So, the structure of the compound is as given below:
