The Spark™ Fragment Selector takes the first molecule in the input and displays a dialog which allows the user to select the region of the molecule to replace. The output of this node should be connected to the input of the Spark Database Search node.
This node wraps the executable 'Spark', which must be installed with a valid license for this node to work. If this is installed in the default location on Windows, then it should be found automatically. Otherwise, you must either set the 'Cresset Home' preference or the CRESSET_HOME environment variable to the base Cresset software install directory. You may also set the 'Spark Path' preference or the CRESSET_SPARK_EXE environment variable to point directly at the executable itself.
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A zipped version of the software site can be downloaded here.
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