ChemCalc
You entered: C40H48N4O4 . H2SO4 . 2H2O
The formula is: C40H48N4O4.H2O4S.2.0H2O
The compound seems to be a salt or a hydrate.
Total mass: 782.94956
Mass of C40H48N4O4: 648.84552
Mass of H2O4S: 98.07348
Mass of H2O: 18.01528
Isotopic distribution