Using COC(=O)CCCSC1N=C2C=CC=CN2C1Cc1cccc2ccccc12 to produce O=C(O)CCCSC1N=C2C=CC=CN2C1Cc1cccc2ccccc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.