Dimethyl 3,3'-(((((2,2'-(piperazine-1,4-diyl)bis(acetyl))bis(methylazanediyl))bis(4,1-phenylene))bis(azanediyl))bis(phenylmethaneylylidene))(3Z,3'Z)-bis(2-oxoindoline-6-carboxylate) 1g

Dimethyl 3,3'-(((((2,2'-(piperazine-1,4-diyl)bis(acetyl))bis(methylazanediyl))bis(4,1-phenylene))bis(azanediyl))bis(phenylmethaneylylidene))(3Z,3'Z)-bis(2-oxoindoline-6-carboxylate) 1g