2-Indolinone,3-(3-oxonaphtho[1,2-b]thien-2(3H)-ylidene)- (8CI); Naphtho[1,2-b]thiophene,2H-indol-2-one deriv.; Naphtho[1,2-b]thiophen-3(2H)-one,2-(1,2-dihydro-2-oxo-3H-indol-3-ylidene)-
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