You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named (3R)-3-[(4S)-2,2-dimethyloxan-4-yl]-3-[[2-[(Z)-[(8S,9S,10R,13S,14R,17R)-17-ethynyl-17-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,14,15,16-decahydro-1H-cyclopenta[a]phenanthren-3-ylidene]amino]oxyacetyl]amino]propanoic acid by IUPAC nomenclature, provide its molecular formula.
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C33H48N2O6
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