prov:value
| - oup, imide group, epoxy group, cyano group, or an alkyl group containing these functional groups, R2 and R3 each represents a hydrogen atom, alkyl group, reactive vinyl group, aryl group, diazo group, nitro group, cinnamoyl group, acryloyl group, imide group, epoxy group, cyano group, or an alkyl or alkoxyl group containing these functional groups, and R4 is an alkyl group); an alkoxygermane (R1R2
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