You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named actinium;[11,19-dihydroxy-17-[4-hydroxy-4-(2-methylpropyl)piperazin-4-ium-1-yl]-5,8-dimethyl-9-oxo-6,14-dioxa-21-azapentacyclo[11.8.0.02,10.03,7.015,20]henicosa-1(21),2,4,7,10,12,15,17,19-nonaen-12-yl]azanide is given. What is its corresponding molecular formula?
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C28H30Ac2N4O6
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