Convert between mass and moles for ssRNA and dsRNA sequences
ssRNA (average): MW = (length × 320.5) + 159.0 g/mol
dsRNA (average): MW = (length × 641.0) + 159.0 g/mol
Exact (sequence): A=329.21, U=306.17, G=345.21, C=305.18 g/mol
Copy number: moles × 6.022 × 10²³