represents 0 or 1, provided that when X is a sulfur atom, l represents 1, and that when X is an iodine atom, 1 represents 0, [0026] m represents an integer of 0 to 10 and [0027] n represents an integer of 1 to 6, provided that when m is 0, n represents an integer of 2 or larger: [0028] wherein R1 to R37 each independently represents a hydrogen atom, an alkyl group, an alkoxy