prov:value
| - The optical information recording medium of claim 3, wherein in the general formula (II), A1 and A2 are independently a hydrogen atom, chlorine atom, an alkyl group having 1 to 6 carbon atoms, a phenyl group, a benzyl group, an alkoxy group having 1 to 6 carbon atoms, or a phenoxy group; Y is O, S, Se, Te or NR6 where R6 is an alkyl group having 1 to 6 carbon atoms, a phenyl group or a benzyl grou
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