The parent chain and the numbers are marked in red on the image.
Work Step by Step
1. Find the parent chain. In this case, the rules are: - It has to be as large as possible. - it has to contain the function group: alcohol. 2. Identify where you are supposed to start counting. The counting should start from the right, since the alcohol is closer to this side. ** We need to count in a way that, the alcohol will get the minimum number possible, which we do by starting from the right. ** Remember: Functional groups have higher priority than substitutents.