Creating Smart Group with Curl over XML

Hi guys,

Am trying to create Smart Group over curl with the following attributes.

However, its not as expected because of the missing bracket.

How do i get bracket included in xml?

Thanks

1<?xml version="1.0" encoding="UTF-8"?>
2<computer_group>
3    <name>Test_xml</name>
4    <is_smart>true</is_smart>
5    <criteria>
6        <criterion>
7            <name>Computer Group</name>
8            <priority>0</priority>
9            <and_or>or</and_or>
10            <search_type>member of</search_type>
11            <value>Z-Google Chrome Install</value>
12        </criterion>  
13        <criterion>
14            <name>Application Title</name>
15            <priority>1</priority>
16            <and_or>and</and_or>
17            <search_type>is</search_type>
18            <value>Google Chrome.app</value>
19        </criterion>
20        <criterion>
21            <name>Application Version</name>
22            <priority>2</priority>
23            <and_or>and</and_or>
24            <search_type>is not</search_type>
25            <value>60.0.3112.78</value>
26        </criterion>
27    </criteria>
28</computer_group>