How many C3H5I3 can you construct?

Tri-iodo-propane (C3H5I3) has 5 (five) molecular isomers:

1,1,1-tri-iodo-propane

1,1,2-tri-iodo-propane

1,1,3-tri-iodo-propane

1,2,2-tri-iodo-propane

1,2,3-tri-iodo-propane