Using CCOC(=O)Cc1nc(NCc2ccccn2)c2c(-c3ccccc3)csc2n1 to produce OCCc1nc(NCc2ccccn2)c2c(-c3ccccc3)csc2n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.