You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1R,4aR,6aR,6aR,6bR,8aR,10S,12aR,14aR,14bS)-10-hydroxy-1,2,6a,6b,9,9,12a-heptamethyl-4,5,6,6a,7,8,8a,10,11,12,13,14,14a,14b-tetradecahydro-1H-picene-4a-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C30H48O3
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