Final answer:
The molecular formula for equilin is C18H22O2, which is known from standard chemical references. The derivation of a molecular formula typically involves empirical formula information not provided here.
Step-by-step explanation:
The molecular formula for equilin, a naturally occurring estrogenic hormone, can be determined if the starting information, like the empirical formula or percentage composition, was provided. However, based on standard references, the molecular formula for equilin is C18H22O2. To determine a molecular formula in general, one would often start with the empirical formula and then multiply the subscripts by a whole number to match the molar mass of the compound.
LibreTexts provides insight into how line-angle formulas represent complex molecules in a simplified way, which might be used to illustrate equilin or similar compounds, but does not directly give the molecular formula for equilin. Without specific empirical formula or percentage composition given for equilin, the exact derivation process cannot be shown. Nonetheless, the molecular formula of equilin, C18H22O2, is well-established in chemical literature.