user: Question: What is the total number of Psychological Dependence, when Pleasure is "2.3", and when Mean is less than 1.9300000000000002?
Columns: ['Drug', 'Mean', 'Pleasure', 'Psychological dependence', 'Physical dependence']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Heroin', 3.0, 3.0, 3.0, 3.0]
SQL:

assistant: SELECT SUM("Psychological dependence") FROM "Table" WHERE "Pleasure" = 2.3 AND "Mean" < 1.9300000000000002;