Make excel recognize foreign date format
You can add a new column after import and then convert the strings into an Excel datetimes with:
=DATE((MID(A1,7,4)),(MID(A1,1,2)),(MID(A1,4,2))) +TIME(MID(A1,12,2),MID(A1,15,2),MID(A1,18,2))
You can also add the fractional part if you need that resolution with:
=DATE((MID(A1,7,4)),(MID(A1,1,2)),(MID(A1,4,2))) +TIME(MID(A1,12,2),MID(A1,15,2),MID(A1,18,2)) +VALUE(MID(A1,21,4))/(86400*10000)
These examples assume your string is in cell A1.