instruction: What is the sum of the [3 H]CFT with an N D less than 393.8 and a [3H] paroxetine of 1045 (45)?
response: SELECT SUM("[ 3 H]CFT") FROM table_65228 WHERE "N \u00f7 D" < '393.8' AND "[ 3 H]Paroxetine" = '1045 (45)'