英文名称
3-ethyl-2-[[(5E)-3-ethyl-5-[4-ethyl-5-[[(5Z)-3-ethyl-5-(4-ethyl-3-methylidene-1H-pyrrol-2-ylidene)-4-methylpyrrol-2-ylidene]-phenylmethyl]-3-methylidene-1H-pyrrol-2-ylidene]-4-methylpyrrol-2-ylidene]-phenylmethyl]-5-(4-ethyl-3-methyl-1H-pyrrol-2-yl)-4-methyl-1H-pyrrole