Using COc1cccc(C2CCCN(CCc3c[nH]c4ccccc34)C2)c1 to produce Oc1cccc(C2CCCN(CCc3c[nH]c4ccccc34)C2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.