24-methyl-5,7,18,20-tetraoxa-24-azahexacyclo[11.11.0.02,10.04,8.014,22.017,21]tetracosa-1(13),2,4(8),9,11,14,16,21,23-nonaen-24-ium
24-methyl-5,7,18,20-tetraoxa-24-azahexacyclo[11.11.0.0²,¹⁰.0⁴,⁸.0¹⁴,²².0¹⁷,²¹]tetracosa-1(13),2(10),3,8,11,14(22),15,17(21),23-nonaen-24-ium