```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns3:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/">
    <query_name>Diagnoses@11:45:40</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>1</hlevel>
            <item_name>Diagnoses</item_name>
            <item_key>\\i2b2_DIAG\i2b2\Diagnoses\</item_key>
            <item_icon>FA</item_icon>
            <tooltip>Diagnoses</tooltip>
            <class>ENC</class>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns3:query_definition>

```

I want to find all diagnoses recorded in the i2b2 database, with a specificity scale of 0, panel timing set to ANY, a panel accuracy scale of 100, and only one item occurrence. The query should include the Diagnoses element with the key \\i2b2_DIAG\i2b2\Diagnoses\ and the class set to ENC. The query should not be a synonym and has a query name of "Diagnoses@1:45:40" and a query timing of ANY.