Name the mountains classification which has a young rider classification of francesco casagrande and integiro classification of not awarded with stage of 2
CREATE TABLE "classification_leadership_by_stage" (
  "stage" text,
  "winner" text,
  "general_classification" text,
  "points_classification" text,
  "mountains_classification" text,
  "young_rider_classification" text,
  "intergiro_classification" text,
  "trofeo_fast_team" text
);
SELECT "mountains_classification" FROM "classification_leadership_by_stage" WHERE "young_rider_classification"='francesco casagrande' AND "intergiro_classification"='not awarded' AND "stage"='2';