Sets data with tag to value. Both tag and value must be strings. If an
item with the same tag already exists, it is replaced. The second form is the
same as the first but uses an OESDDataPair instance.
OEAddSDData(mol, tag, value)
OEAddSDData(mol, dp)
Adds data with tag to value. Both tag and value must be strings. If an
item with the same tag already exists, another one is added. The
second form is the same as the first but uses an OESDDataPair
instance.