Client Tools :: Export Data In Nested Table

I have some problem when i try to export data from a table which contains a nested table, using toad.

When toad generate the file, in the column corresponding to the nested table, toad just write a (DATASET) instead of the data contained in the nested table

Here is an example:
INSERT INTO SSD_REV_S ( REV_ID, REV_TAB, REV_TS, REV_USER, REV_LOG )
VALUES (
TO_Date( '07/30/2007 12:00:00 AM', 'MM/DD/YYYY HH:MI:SS AM'), (DATASET), TO_TIMESTAMP('4/3/2009 11:20:51.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'), 'operator', 'Add EVENT');

REV_TAB is my nested table

way to export data from a table which contain a nested table, as a list of insert statement, so i can move the data to a different database schema? I can also use different client tool.