You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-N,18-N-bis(2-methylphenyl)-6-N,18-N-bis(6-phenyldibenzofuran-4-yl)-12-thiapentacyclo[11.8.0.02,11.03,8.016,21]henicosa-1(13),2(11),3(8),4,6,9,14,16(21),17,19-decaene-6,18-diamine;6-N,18-N-bis(3-methylphenyl)-6-N,18-N-bis(6-phenyldibenzofuran-4-yl)-12-thiapentacyclo[11.8.0.02,11.03,8.016,21]henicosa-1(13),2(11),3(8),4,6,9,14,16(21),17,19-decaene-6,18-diamine;6-N,18-N-di(dibenzofuran-4-yl)-6-N-(4-methylphenyl)-18-N-(4-trimethylsilylphenyl)-12-thiapentacyclo[11.8.0.02,11.03,8.016,21]henicosa-1(13),2(11),3(8),4,6,9,14,16(21),17,19-decaene-6,18-diamine;6-N,18-N-diphenyl-6-N,18-N-bis(6-phenyldibenzofuran-4-yl)-12-thiapentacyclo[11.8.0.02,11.03,8.016,21]henicosa-1(13),2(11),3(8),4,6,9,14,16(21),17,19-decaene-6,18-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C268H178N8O8S4Si
assistant