Using O=Cc1ccc2[nH]cc(CCN3CCN(c4nccc5[nH]ccc45)CC3)c2c1 to produce OCc1ccc2[nH]cc(CCN3CCN(c4nccc5[nH]ccc45)CC3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.