Splitting feature using gaps around in ArcGIS for Desktop?

Question

I have a shapefile which has only one feature. I want to separate it into a set of features. these features must be separated using gaps between each feature. How can I do it?

this is its image

I have used some tools such as erase and diffrence but they don't work because there is only one feature, So I must find a way to split this one feature using gaps into set of feature classes.

I am using ArcGIS 10.3 for Desktop.

Answer 1

In ArcGIS try Multipart To Singlepart:

Creates a feature class containing singlepart features generated by separating multipart input features

After that the features will be separated (but still in one feature class).