user: Question: what is the perfect of mass when the molecules is 1.74e14*?
Columns: ['Molecule', 'Percent of Mass', 'Mol.Weight (daltons)', 'Molecules', 'Percent of Molecules']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Water', '65*', '18*', '1.74e14*', '98.73*']
SQL:

assistant: SELECT "Percent of Mass" FROM "Table" WHERE "Molecules" = '1.74e14*';