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What is the molecular formula of the compound with this IUPAC name trimethyl-[2'-(2-methylpropyl)-16-[4-phenyl-2,6-di(propan-2-yl)phenyl]spiro[16-aza-23-azoniahexacyclo[12.10.0.03,12.04,9.015,23.017,22]tetracosa-1(14),2,4,6,8,10,12,15(23),17,19,21-undecaene-24,6'-pyrido[2,1-a]isoindol-5-ium]-3'-yl]silane ?
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C58H57N3Si+2
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