You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(2R,4R)-2-(cyclohexylmethyl)-4-phenylpiperidin-1-yl]-[(3'S,5S)-2-methoxyspiro[7,8-dihydro-6H-1,7-naphthyridine-1,7-diium-5,4'-pyrrolidin-1-ium]-3'-yl]methanone into its molecular formula.
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C31H45N4O2+3
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