Using O=C1C(Br)=C(c2ccccc2)c2ccc(OCCCc3ccccc3)cc21, N#C[Cu] to produce N#CC1=C(c2ccccc2)c2ccc(OCCCc3ccccc3)cc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.