Using C1=COCCC1, Ic1n[nH]c2ccc(-c3cncc(C4CC4)n3)cc12 to produce Ic1nn(C2CCCCO2)c2ccc(-c3cncc(C4CC4)n3)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.